111131012269 has 2 divisors, whose sum is σ = 111131012270. Its totient is φ = 111131012268.

The previous prime is 111131012263. The next prime is 111131012347. The reversal of 111131012269 is 962210131111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111130889769 + 122500 = 333363^2 + 350^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111131012269 is a prime.

It is a super-2 number, since 2×111131012269² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111131012263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55565506134 + 55565506135.

It is an arithmetic number, because the mean of its divisors is an integer number (55565506135).

Almost surely, 2^111131012269 is an apocalyptic number.

It is an amenable number.

111131012269 is a deficient number, since it is larger than the sum of its proper divisors (1).

111131012269 is an equidigital number, since it uses as much as digits as its factorization.

111131012269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 28.

The spelling of 111131012269 in words is "one hundred eleven billion, one hundred thirty-one million, twelve thousand, two hundred sixty-nine".