122000111029981 has 2 divisors, whose sum is σ = 122000111029982. Its totient is φ = 122000111029980.

The previous prime is 122000111029967. The next prime is 122000111030029. The reversal of 122000111029981 is 189920111000221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87102854417881 + 34897256612100 = 9332891^2 + 5907390^2 .

It is a cyclic number.

It is not a de Polignac number, because 122000111029981 - 2⁹ = 122000111029469 is a prime.

It is a super-2 number, since 2×122000111029981² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 122000111029981.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122000111021981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61000055514990 + 61000055514991.

It is an arithmetic number, because the mean of its divisors is an integer number (61000055514991).

Almost surely, 2^{122000111029981} is an apocalyptic number.

It is an amenable number.

122000111029981 is a deficient number, since it is larger than the sum of its proper divisors (1).

122000111029981 is an equidigital number, since it uses as much as digits as its factorization.

122000111029981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 37.

The spelling of 122000111029981 in words is "one hundred twenty-two trillion, one hundred eleven million, twenty-nine thousand, nine hundred eighty-one".