122211220212221 has 32 divisors (see below), whose sum is σ = 142842946583040. Its totient is φ = 102398359762944.

The previous prime is 122211220212187. The next prime is 122211220212227. The reversal of 122211220212221 is 122212022112221.

It is a de Polignac number, because none of the positive numbers 2^k-122211220212221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122211220212227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1759336736 + ... + 1759406198.

It is an arithmetic number, because the mean of its divisors is an integer number (4463842080720).

Almost surely, 2^{122211220212221} is an apocalyptic number.

It is an amenable number.

122211220212221 is a deficient number, since it is larger than the sum of its proper divisors (20631726370819).

122211220212221 is a wasteful number, since it uses less digits than its factorization.

122211220212221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100125.

The product of its (nonzero) digits is 512, while the sum is 23.

Adding to 122211220212221 its reverse (122212022112221), we get a palindrome (244423242324442).

The spelling of 122211220212221 in words is "one hundred twenty-two trillion, two hundred eleven billion, two hundred twenty million, two hundred twelve thousand, two hundred twenty-one".