123020013112220 has 48 divisors (see below), whose sum is σ = 295394848670208. Its totient is φ = 42157316324160.

The previous prime is 123020013112211. The next prime is 123020013112223. The reversal of 123020013112220 is 22211310020321.

It is a super-2 number, since 2×123020013112220² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 123020013112192 and 123020013112201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123020013112223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 218195432 + ... + 218758511.

It is an arithmetic number, because the mean of its divisors is an integer number (6154059347296).

Almost surely, 2^{123020013112220} is an apocalyptic number.

123020013112220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123020013112220 is an abundant number, since it is smaller than the sum of its proper divisors (172374835557988).

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

123020013112220 is a wasteful number, since it uses less digits than its factorization.

123020013112220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436955970 (or 436955968 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 123020013112220 its reverse (22211310020321), we get a palindrome (145231323132541).

The spelling of 123020013112220 in words is "one hundred twenty-three trillion, twenty billion, thirteen million, one hundred twelve thousand, two hundred twenty".