123021033212220 has 288 divisors, whose sum is σ = 410445072791040. Its totient is φ = 27346866624000.

The previous prime is 123021033212177. The next prime is 123021033212299. The reversal of 123021033212220 is 22212330120321.

It is a super-2 number, since 2×123021033212220² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 9935271 + ... + 18567489.

Almost surely, 2^{123021033212220} is an apocalyptic number.

123021033212220 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 123021033212220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (205222536395520).

123021033212220 is an abundant number, since it is smaller than the sum of its proper divisors (287424039578820).

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

123021033212220 is a wasteful number, since it uses less digits than its factorization.

123021033212220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8632417 (or 8632404 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 123021033212220 its reverse (22212330120321), we get a palindrome (145233363332541).

The spelling of 123021033212220 in words is "one hundred twenty-three trillion, twenty-one billion, thirty-three million, two hundred twelve thousand, two hundred twenty".