123110122020 has 48 divisors (see below), whose sum is σ = 346612838208. Its totient is φ = 32647985280.

The previous prime is 123110122019. The next prime is 123110122021. The reversal of 123110122020 is 20221011321.

It is an interprime number because it is at equal distance from previous prime (123110122019) and next prime (123110122021).

It is a super-2 number, since 2×123110122020² (a number of 23 digits) contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (123110122021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5657194 + ... + 5678913.

It is an arithmetic number, because the mean of its divisors is an integer number (7221100796).

Almost surely, 2^123110122020 is an apocalyptic number.

123110122020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123110122020 is an abundant number, since it is smaller than the sum of its proper divisors (223502716188).

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

123110122020 is a wasteful number, since it uses less digits than its factorization.

123110122020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11336300 (or 11336298 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 123110122020 its reverse (20221011321), we get a palindrome (143331133341).

The spelling of 123110122020 in words is "one hundred twenty-three billion, one hundred ten million, one hundred twenty-two thousand, twenty".