20213011320 has 128 divisors (see below), whose sum is σ = 61495156800. Its totient is φ = 5314461696.

The previous prime is 20213011309. The next prime is 20213011349. The reversal of 20213011320 is 2311031202.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 20213011320.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3221146 + ... + 3227414.

Almost surely, 2^20213011320 is an apocalyptic number.

20213011320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20213011320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30747578400).

20213011320 is an abundant number, since it is smaller than the sum of its proper divisors (41282145480).

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

20213011320 is a wasteful number, since it uses less digits than its factorization.

20213011320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6657 (or 6653 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 20213011320 its reverse (2311031202), we get a palindrome (22524042522).

The spelling of 20213011320 in words is "twenty billion, two hundred thirteen million, eleven thousand, three hundred twenty".