21222332313121 has 8 divisors (see below), whose sum is σ = 21243277512000. Its totient is φ = 21201392151120.

The previous prime is 21222332313101. The next prime is 21222332313131. The reversal of 21222332313121 is 12131323322212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21222332313121 - 2²³ = 21222323924513 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 21222332313121.

It is not an unprimeable number, because it can be changed into a prime (21222332313101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7199730 + ... + 9709828.

It is an arithmetic number, because the mean of its divisors is an integer number (2655409689000).

Almost surely, 2^{21222332313121} is an apocalyptic number.

It is an amenable number.

21222332313121 is a deficient number, since it is larger than the sum of its proper divisors (20945198879).

21222332313121 is a wasteful number, since it uses less digits than its factorization.

21222332313121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2518439.

The product of its digits is 5184, while the sum is 28.

Adding to 21222332313121 its reverse (12131323322212), we get a palindrome (33353655635333).

The spelling of 21222332313121 in words is "twenty-one trillion, two hundred twenty-two billion, three hundred thirty-two million, three hundred thirteen thousand, one hundred twenty-one".