122212020211021 has 4 divisors (see below), whose sum is σ = 131612944842652. Its totient is φ = 112811095579392.

The previous prime is 122212020211019. The next prime is 122212020211051. The reversal of 122212020211021 is 120112020212221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9340816875625 + 112871203335396 = 3056275^2 + 10624086^2 .

It is a cyclic number.

It is not a de Polignac number, because 122212020211021 - 2¹ = 122212020211019 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 122212020211021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122212020211051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4700462315796 + ... + 4700462315821.

It is an arithmetic number, because the mean of its divisors is an integer number (32903236210663).

Almost surely, 2^{122212020211021} is an apocalyptic number.

It is an amenable number.

122212020211021 is a deficient number, since it is larger than the sum of its proper divisors (9400924631631).

122212020211021 is an equidigital number, since it uses as much as digits as its factorization.

122212020211021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9400924631630.

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

Adding to 122212020211021 its reverse (120112020212221), we get a palindrome (242324040423242).

The spelling of 122212020211021 in words is "one hundred twenty-two trillion, two hundred twelve billion, twenty million, two hundred eleven thousand, twenty-one".