123112232020 has 96 divisors (see below), whose sum is σ = 279477112320. Its totient is φ = 45414673920.

The previous prime is 123112232003. The next prime is 123112232041. The reversal of 123112232020 is 20232211321.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9905410 + ... + 9917830.

It is an arithmetic number, because the mean of its divisors is an integer number (2911219920).

Almost surely, 2^123112232020 is an apocalyptic number.

123112232020 is a gapful number since it is divisible by the number (10) 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 123112232020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139738556160).

123112232020 is an abundant number, since it is smaller than the sum of its proper divisors (156364880300).

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

123112232020 is a wasteful number, since it uses less digits than its factorization.

123112232020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13225 (or 13223 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 123112232020 its reverse (20232211321), we get a palindrome (143344443341).

The spelling of 123112232020 in words is "one hundred twenty-three billion, one hundred twelve million, two hundred thirty-two thousand, twenty".