122132212221 has 4 divisors (see below), whose sum is σ = 162842949632. Its totient is φ = 81421474812.

The previous prime is 122132212217. The next prime is 122132212231. The reversal of 122132212221 is 122212231221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 122132212221 - 2² = 122132212217 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 (122132212201) 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, 20355368701 + ... + 20355368706.

It is an arithmetic number, because the mean of its divisors is an integer number (40710737408).

Almost surely, 2^122132212221 is an apocalyptic number.

It is an amenable number.

122132212221 is a deficient number, since it is larger than the sum of its proper divisors (40710737411).

122132212221 is an equidigital number, since it uses as much as digits as its factorization.

122132212221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40710737410.

The product of its digits is 384, while the sum is 21.

Adding to 122132212221 its reverse (122212231221), we get a palindrome (244344443442).

The spelling of 122132212221 in words is "one hundred twenty-two billion, one hundred thirty-two million, two hundred twelve thousand, two hundred twenty-one".