121231333120 has 72 divisors (see below), whose sum is σ = 305670511440. Its totient is φ = 45940285440.

The previous prime is 121231333117. The next prime is 121231333133. The reversal of 121231333120 is 21333132121.

It is a super-2 number, since 2×121231333120² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121231333091 and 121231333100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2468101 + ... + 2516740.

It is an arithmetic number, because the mean of its divisors is an integer number (4245423770).

Almost surely, 2^121231333120 is an apocalyptic number.

121231333120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121231333120 is an abundant number, since it is smaller than the sum of its proper divisors (184439178320).

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

121231333120 is an equidigital number, since it uses as much as digits as its factorization.

121231333120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4984881 (or 4984867 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 121231333120 its reverse (21333132121), we get a palindrome (142564465241).

The spelling of 121231333120 in words is "one hundred twenty-one billion, two hundred thirty-one million, three hundred thirty-three thousand, one hundred twenty".