122000111099981 has 2 divisors, whose sum is σ = 122000111099982. Its totient is φ = 122000111099980.

The previous prime is 122000111099969. The next prime is 122000111100059. The reversal of 122000111099981 is 189990111000221.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80965965575881 + 41034145524100 = 8998109^2 + 6405790^2 .

It is a cyclic number.

It is not a de Polignac number, because 122000111099981 - 2²⁶ = 122000043991117 is a prime.

It is a super-2 number, since 2×122000111099981² (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 (122000111029981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61000055549990 + 61000055549991.

It is an arithmetic number, because the mean of its divisors is an integer number (61000055549991).

Almost surely, 2^{122000111099981} is an apocalyptic number.

It is an amenable number.

122000111099981 is a deficient number, since it is larger than the sum of its proper divisors (1).

122000111099981 is an equidigital number, since it uses as much as digits as its factorization.

122000111099981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 44.

The spelling of 122000111099981 in words is "one hundred twenty-two trillion, one hundred eleven million, ninety-nine thousand, nine hundred eighty-one".