123011302312020 has 192 divisors, whose sum is σ = 349932441600000. Its totient is φ = 32282637978624.

The previous prime is 123011302311967. The next prime is 123011302312033. The reversal of 123011302312020 is 20213203110321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11716472731 + ... + 11716483229.

It is an arithmetic number, because the mean of its divisors is an integer number (1822564800000).

Almost surely, 2^{123011302312020} is an apocalyptic number.

123011302312020 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 123011302312020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174966220800000).

123011302312020 is an abundant number, since it is smaller than the sum of its proper divisors (226921139287980).

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

123011302312020 is a wasteful number, since it uses less digits than its factorization.

123011302312020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20662 (or 20660 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 123011302312020 its reverse (20213203110321), we get a palindrome (143224505422341).

The spelling of 123011302312020 in words is "one hundred twenty-three trillion, eleven billion, three hundred two million, three hundred twelve thousand, twenty".