20122130320 has 40 divisors (see below), whose sum is σ = 48048391224. Its totient is φ = 7831314432.

The previous prime is 20122130311. The next prime is 20122130383. The reversal of 20122130320 is 2303122102.

It can be written as a sum of positive squares in 4 ways, for example, as 3109623696 + 17012506624 = 55764^2 + 130432^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 20122130294 and 20122130303.

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, 3396049 + ... + 3401968.

Almost surely, 2^20122130320 is an apocalyptic number.

20122130320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20122130320 is an abundant number, since it is smaller than the sum of its proper divisors (27926260904).

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

20122130320 is a wasteful number, since it uses less digits than its factorization.

20122130320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6798067 (or 6798061 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 20122130320 its reverse (2303122102), we get a palindrome (22425252422).

The spelling of 20122130320 in words is "twenty billion, one hundred twenty-two million, one hundred thirty thousand, three hundred twenty".