122012021221021 has 16 divisors (see below), whose sum is σ = 126589281280000. Its totient is φ = 117474927490800.

The previous prime is 122012021220997. The next prime is 122012021221073. The reversal of 122012021221021 is 120122120210221.

It is a cyclic number.

It is not a de Polignac number, because 122012021221021 - 2⁷ = 122012021220893 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 122012021221021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122012021221921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92441080 + ... + 93751678.

It is an arithmetic number, because the mean of its divisors is an integer number (7911830080000).

Almost surely, 2^{122012021221021} is an apocalyptic number.

It is an amenable number.

122012021221021 is a deficient number, since it is larger than the sum of its proper divisors (4577260058979).

122012021221021 is a wasteful number, since it uses less digits than its factorization.

122012021221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1325920.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 122012021221021 its reverse (120122120210221), we get a palindrome (242134141431242).

The spelling of 122012021221021 in words is "one hundred twenty-two trillion, twelve billion, twenty-one million, two hundred twenty-one thousand, twenty-one".