111020110999957 has 2 divisors, whose sum is σ = 111020110999958. Its totient is φ = 111020110999956.

The previous prime is 111020110999949. The next prime is 111020111000003. The reversal of 111020110999957 is 759999011020111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 103547902870801 + 7472208129156 = 10175849^2 + 2733534^2 .

It is a cyclic number.

It is not a de Polignac number, because 111020110999957 - 2³ = 111020110999949 is a prime.

It is a super-4 number, since 4×111020110999957⁴ (a number of 57 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111020110999898 and 111020110999907.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111020110999757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55510055499978 + 55510055499979.

It is an arithmetic number, because the mean of its divisors is an integer number (55510055499979).

Almost surely, 2^{111020110999957} is an apocalyptic number.

It is an amenable number.

111020110999957 is a deficient number, since it is larger than the sum of its proper divisors (1).

111020110999957 is an equidigital number, since it uses as much as digits as its factorization.

111020110999957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 459270, while the sum is 55.

The spelling of 111020110999957 in words is "one hundred eleven trillion, twenty billion, one hundred ten million, nine hundred ninety-nine thousand, nine hundred fifty-seven".