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122111331131 = 831917702727
BaseRepresentation
bin111000110111001100…
…1110000101100111011
3102200012011000100022202
41301232121300230323
54000041000044011
6132032553340415
711552014121516
oct1615631605473
9380164010282
10122111331131
1147872732489
121b7baa0770b
13b69074192a
145ca5901d7d
15329a50a23b
hex1c6e670b3b

122111331131 has 8 divisors (see below), whose sum is σ = 124229597184. Its totient is φ = 120008471080.

The previous prime is 122111331101. The next prime is 122111331197. The reversal of 122111331131 is 131133111221.

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

It is a cyclic number.

It is not a de Polignac number, because 122111331131 - 230 = 121037589307 is a prime.

It is a super-2 number, since 2×1221113311312 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122111331101) 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, 3835511 + ... + 3867216.

It is an arithmetic number, because the mean of its divisors is an integer number (15528699648).

Almost surely, 2122111331131 is an apocalyptic number.

122111331131 is a deficient number, since it is larger than the sum of its proper divisors (2118266053).

122111331131 is an equidigital number, since it uses as much as digits as its factorization.

122111331131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7703001.

The product of its digits is 108, while the sum is 20.

Adding to 122111331131 its reverse (131133111221), we get a palindrome (253244442352).

The spelling of 122111331131 in words is "one hundred twenty-two billion, one hundred eleven million, three hundred thirty-one thousand, one hundred thirty-one".

Divisors: 1 83 191 15853 7702727 639326341 1471220857 122111331131