111022010120981 has 2 divisors, whose sum is σ = 111022010120982. Its totient is φ = 111022010120980.

The previous prime is 111022010120977. The next prime is 111022010121037. The reversal of 111022010120981 is 189021010220111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62866265880625 + 48155744240356 = 7928825^2 + 6939434^2 .

It is a cyclic number.

It is not a de Polignac number, because 111022010120981 - 2² = 111022010120977 is a prime.

It is a super-2 number, since 2×111022010120981² (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 (111022010120911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55511005060490 + 55511005060491.

It is an arithmetic number, because the mean of its divisors is an integer number (55511005060491).

Almost surely, 2^{111022010120981} is an apocalyptic number.

It is an amenable number.

111022010120981 is a deficient number, since it is larger than the sum of its proper divisors (1).

111022010120981 is an equidigital number, since it uses as much as digits as its factorization.

111022010120981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 29.

The spelling of 111022010120981 in words is "one hundred eleven trillion, twenty-two billion, ten million, one hundred twenty thousand, nine hundred eighty-one".