122254423251021 has 12 divisors (see below), whose sum is σ = 176593328969148. Its totient is φ = 81501284297664.

The previous prime is 122254423251013. The next prime is 122254423251083. The reversal of 122254423251021 is 120152324452221.

122254423251021 is a `hidden beast` number, since 1 + 2 + 2 + 2 + 54 + 42 + 32 + 510 + 21 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 5295843612900 + 116958579638121 = 2301270^2 + 10814739^2 .

It is not a de Polignac number, because 122254423251021 - 2³ = 122254423251013 is a prime.

It is a super-2 number, since 2×122254423251021² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122254423251001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 138246120 + ... + 139127633.

It is an arithmetic number, because the mean of its divisors is an integer number (14716110747429).

Almost surely, 2^{122254423251021} is an apocalyptic number.

It is an amenable number.

122254423251021 is a deficient number, since it is larger than the sum of its proper divisors (54338905718127).

122254423251021 is a wasteful number, since it uses less digits than its factorization.

122254423251021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277422732 (or 277422729 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 36.

The spelling of 122254423251021 in words is "one hundred twenty-two trillion, two hundred fifty-four billion, four hundred twenty-three million, two hundred fifty-one thousand, twenty-one".