123031220022 has 48 divisors (see below), whose sum is σ = 275651054640. Its totient is φ = 39636058176.

The previous prime is 123031220003. The next prime is 123031220041. The reversal of 123031220022 is 220022130321.

It is an interprime number because it is at equal distance from previous prime (123031220003) and next prime (123031220041).

It is a super-2 number, since 2×123031220022² (a number of 23 digits) contains 22 as substring.

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 = 123031219977 and 123031220004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 898497 + ... + 1026332.

It is an arithmetic number, because the mean of its divisors is an integer number (5742730305).

Almost surely, 2^123031220022 is an apocalyptic number.

123031220022 is an abundant number, since it is smaller than the sum of its proper divisors (152619834618).

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

123031220022 is a wasteful number, since it uses less digits than its factorization.

123031220022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1924957 (or 1924954 counting only the distinct ones).

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

Adding to 123031220022 its reverse (220022130321), we get a palindrome (343053350343).

The spelling of 123031220022 in words is "one hundred twenty-three billion, thirty-one million, two hundred twenty thousand, twenty-two".