123123212020220 has 24 divisors (see below), whose sum is σ = 259119610219008. Its totient is φ = 49142453384000.

The previous prime is 123123212020217. The next prime is 123123212020223. The reversal of 123123212020220 is 22020212321321.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (123123212020217) and next prime (123123212020223).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123123212020223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6676954556 + ... + 6676972995.

It is an arithmetic number, because the mean of its divisors is an integer number (10796650425792).

Almost surely, 2^{123123212020220} is an apocalyptic number.

123123212020220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123123212020220 is an abundant number, since it is smaller than the sum of its proper divisors (135996398198788).

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

123123212020220 is a wasteful number, since it uses less digits than its factorization.

123123212020220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13353928021 (or 13353928019 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 123123212020220 its reverse (22020212321321), we get a palindrome (145143424341541).

The spelling of 123123212020220 in words is "one hundred twenty-three trillion, one hundred twenty-three billion, two hundred twelve million, twenty thousand, two hundred twenty".