122021012211181 has 2 divisors, whose sum is σ = 122021012211182. Its totient is φ = 122021012211180.

The previous prime is 122021012211167. The next prime is 122021012211221. The reversal of 122021012211181 is 181112210120221.

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., 116818808475625 + 5202203735556 = 10808275^2 + 2280834^2 .

It is a cyclic number.

It is not a de Polignac number, because 122021012211181 - 2⁵ = 122021012211149 is a prime.

It is a super-2 number, since 2×122021012211181² (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 (122021012211121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61010506105590 + 61010506105591.

It is an arithmetic number, because the mean of its divisors is an integer number (61010506105591).

Almost surely, 2^{122021012211181} is an apocalyptic number.

It is an amenable number.

122021012211181 is a deficient number, since it is larger than the sum of its proper divisors (1).

122021012211181 is an equidigital number, since it uses as much as digits as its factorization.

122021012211181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 256, while the sum is 25.

The spelling of 122021012211181 in words is "one hundred twenty-two trillion, twenty-one billion, twelve million, two hundred eleven thousand, one hundred eighty-one".