21220122211232 has 48 divisors (see below), whose sum is σ = 49821156508032. Its totient is φ = 8698932084480.

The previous prime is 21220122211217. The next prime is 21220122211259. The reversal of 21220122211232 is 23211222102212.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a junction number, because it is equal to n+sod(n) for n = 21220122211198 and 21220122211207.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2059401119 + ... + 2059411422.

It is an arithmetic number, because the mean of its divisors is an integer number (1037940760584).

Almost surely, 2^{21220122211232} is an apocalyptic number.

It is an amenable number.

21220122211232 is an abundant number, since it is smaller than the sum of its proper divisors (28601034296800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21220122211232 is a wasteful number, since it uses less digits than its factorization.

21220122211232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4118812581 (or 4118812573 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 21220122211232 its reverse (23211222102212), we get a palindrome (44431344313444).

The spelling of 21220122211232 in words is "twenty-one trillion, two hundred twenty billion, one hundred twenty-two million, two hundred eleven thousand, two hundred thirty-two".