111020202209957 has 2 divisors, whose sum is σ = 111020202209958. Its totient is φ = 111020202209956.

The previous prime is 111020202209947. The next prime is 111020202209981. The reversal of 111020202209957 is 759902202020111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83867755148356 + 27152447061601 = 9157934^2 + 5210801^2 .

It is a cyclic number.

It is not a de Polignac number, because 111020202209957 - 2¹⁴ = 111020202193573 is a prime.

It is a super-2 number, since 2×111020202209957² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111020202209947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55510101104978 + 55510101104979.

It is an arithmetic number, because the mean of its divisors is an integer number (55510101104979).

Almost surely, 2^{111020202209957} is an apocalyptic number.

It is an amenable number.

111020202209957 is a deficient number, since it is larger than the sum of its proper divisors (1).

111020202209957 is an equidigital number, since it uses as much as digits as its factorization.

111020202209957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 41.

The spelling of 111020202209957 in words is "one hundred eleven trillion, twenty billion, two hundred two million, two hundred nine thousand, nine hundred fifty-seven".