20212113321 has 24 divisors (see below), whose sum is σ = 30681668160. Its totient is φ = 12805654176.

The previous prime is 20212113307. The next prime is 20212113323. The reversal of 20212113321 is 12331121202.

20212113321 is a `hidden beast` number, since 20 + 212 + 113 + 321 = 666.

It is not a de Polignac number, because 20212113321 - 2⁵ = 20212113289 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20212113294 and 20212113303.

It is not an unprimeable number, because it can be changed into a prime (20212113323) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 691461 + ... + 720098.

It is an arithmetic number, because the mean of its divisors is an integer number (1278402840).

Almost surely, 2^20212113321 is an apocalyptic number.

It is an amenable number.

20212113321 is a deficient number, since it is larger than the sum of its proper divisors (10469554839).

20212113321 is a wasteful number, since it uses less digits than its factorization.

20212113321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1411645 (or 1411642 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 20212113321 its reverse (12331121202), we get a palindrome (32543234523).

The spelling of 20212113321 in words is "twenty billion, two hundred twelve million, one hundred thirteen thousand, three hundred twenty-one".