123121332222120 has 128 divisors (see below), whose sum is σ = 412861952966400. Its totient is φ = 32635754281728.

The previous prime is 123121332222089. The next prime is 123121332222151. The reversal of 123121332222120 is 21222233121321.

123121332222120 is a `hidden beast` number, since 1 + 2 + 3 + 1 + 213 + 322 + 2 + 2 + 120 = 666.

It is an interprime number because it is at equal distance from previous prime (123121332222089) and next prime (123121332222151).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 341140699 + ... + 341501418.

It is an arithmetic number, because the mean of its divisors is an integer number (3225484007550).

Almost surely, 2^{123121332222120} is an apocalyptic number.

123121332222120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123121332222120 is an abundant number, since it is smaller than the sum of its proper divisors (289740620744280).

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

123121332222120 is a wasteful number, since it uses less digits than its factorization.

123121332222120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 682642304 (or 682642294 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 123121332222120 its reverse (21222233121321), we get a palindrome (144343565343441).

The spelling of 123121332222120 in words is "one hundred twenty-three trillion, one hundred twenty-one billion, three hundred thirty-two million, two hundred twenty-two thousand, one hundred twenty".