123312302012020 has 48 divisors (see below), whose sum is σ = 282714079632768. Its totient is φ = 44806423455360.

The previous prime is 123312302012017. The next prime is 123312302012023. The reversal of 123312302012020 is 20210203213321.

It is an interprime number because it is at equal distance from previous prime (123312302012017) and next prime (123312302012023).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 123312302011982 and 123312302012000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123312302012023) 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, 214797939 + ... + 215371258.

It is an arithmetic number, because the mean of its divisors is an integer number (5889876659016).

Almost surely, 2^{123312302012020} is an apocalyptic number.

123312302012020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123312302012020 is an abundant number, since it is smaller than the sum of its proper divisors (159401777620748).

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

123312302012020 is a wasteful number, since it uses less digits than its factorization.

123312302012020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430170520 (or 430170518 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 123312302012020 its reverse (20210203213321), we get a palindrome (143522505225341).

The spelling of 123312302012020 in words is "one hundred twenty-three trillion, three hundred twelve billion, three hundred two million, twelve thousand, twenty".