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112111111212221 = 1160891673824799
BaseRepresentation
bin11001011111011011100110…
…111101011000110010111101
3112200221201101002202001001102
4121133123212331120302331
5104143312023432242341
61034235044455422445
732420521563660062
oct3137334675306275
9480851332661042
10112111111212221
11327a40676042a0
12106a7a74384a25
134a7305630a944
141d982c73d0c69
15ce6402135c9b
hex65f6e6f58cbd

112111111212221 has 8 divisors (see below), whose sum is σ = 122323116384000. Its totient is φ = 101902453702240.

The previous prime is 112111111212169. The next prime is 112111111212251. The reversal of 112111111212221 is 122212111111211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-112111111212221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 112111111212193 and 112111111212202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112111111212251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 836845421 + ... + 836979378.

It is an arithmetic number, because the mean of its divisors is an integer number (15290389548000).

Almost surely, 2112111111212221 is an apocalyptic number.

112111111212221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

112111111212221 is a deficient number, since it is larger than the sum of its proper divisors (10212005171779).

112111111212221 is a wasteful number, since it uses less digits than its factorization.

112111111212221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1673830899.

The product of its digits is 32, while the sum is 20.

Adding to 112111111212221 its reverse (122212111111211), we get a palindrome (234323222323432).

The spelling of 112111111212221 in words is "one hundred twelve trillion, one hundred eleven billion, one hundred eleven million, two hundred twelve thousand, two hundred twenty-one".

Divisors: 1 11 6089 66979 1673824799 18412072789 10191919201111 112111111212221