20213213320 has 32 divisors (see below), whose sum is σ = 45837849600. Its totient is φ = 8021619648.

The previous prime is 20213213297. The next prime is 20213213357. The reversal of 20213213320 is 2331231202.

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, 1984410 + ... + 1994569.

It is an arithmetic number, because the mean of its divisors is an integer number (1432432800).

Almost surely, 2^20213213320 is an apocalyptic number.

20213213320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20213213320 is an abundant number, since it is smaller than the sum of its proper divisors (25624636280).

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

20213213320 is a wasteful number, since it uses less digits than its factorization.

20213213320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3979117 (or 3979113 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 20213213320 its reverse (2331231202), we get a palindrome (22544444522).

The spelling of 20213213320 in words is "twenty billion, two hundred thirteen million, two hundred thirteen thousand, three hundred twenty".