13123222020 has 48 divisors (see below), whose sum is σ = 40827803520. Its totient is φ = 3499525728.

The previous prime is 13123222019. The next prime is 13123222093. The reversal of 13123222020 is 2022232131.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 13123221984 and 13123222002.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12150592 + ... + 12151671.

It is an arithmetic number, because the mean of its divisors is an integer number (850579240).

Almost surely, 2^13123222020 is an apocalyptic number.

13123222020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13123222020 is an abundant number, since it is smaller than the sum of its proper divisors (27704581500).

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

13123222020 is a wasteful number, since it uses less digits than its factorization.

13123222020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24302281 (or 24302273 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 13123222020 its reverse (2022232131), we get a palindrome (15145454151).

The spelling of 13123222020 in words is "thirteen billion, one hundred twenty-three million, two hundred twenty-two thousand, twenty".