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112121221131 = 3243572859287
BaseRepresentation
bin110100001101011110…
…0100001000000001011
3101201101220212011201200
41220122330201000023
53314111013034011
6123301402515243
711046316440423
oct1503274410013
9351356764650
10112121221131
1143606562a27
1219891205b23
13a75ab07c3a
1455d8bd5483
152db3452856
hex1a1af2100b

112121221131 has 12 divisors (see below), whose sum is σ = 161990102352. Its totient is φ = 74730298896.

The previous prime is 112121221129. The next prime is 112121221153. The reversal of 112121221131 is 131122121211.

It is a happy number.

It is not a de Polignac number, because 112121221131 - 21 = 112121221129 is a prime.

It is a super-2 number, since 2×1121212211312 (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (112121221931) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1390431 + ... + 1468856.

It is an arithmetic number, because the mean of its divisors is an integer number (13499175196).

Almost surely, 2112121221131 is an apocalyptic number.

112121221131 is a deficient number, since it is larger than the sum of its proper divisors (49868881221).

112121221131 is a wasteful number, since it uses less digits than its factorization.

112121221131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2863650 (or 2863647 counting only the distinct ones).

The product of its digits is 48, while the sum is 18.

Adding to 112121221131 its reverse (131122121211), we get a palindrome (243243342342).

The spelling of 112121221131 in words is "one hundred twelve billion, one hundred twenty-one million, two hundred twenty-one thousand, one hundred thirty-one".

Divisors: 1 3 9 4357 13071 39213 2859287 8577861 25733583 12457913459 37373740377 112121221131