133121010120 has 64 divisors (see below), whose sum is σ = 456414894720. Its totient is φ = 30427659264.

The previous prime is 133121010037. The next prime is 133121010163. The reversal of 133121010120 is 21010121331.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 133121010120.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79237857 + ... + 79239536.

It is an arithmetic number, because the mean of its divisors is an integer number (7131482730).

Almost surely, 2^133121010120 is an apocalyptic number.

133121010120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133121010120 is an abundant number, since it is smaller than the sum of its proper divisors (323293884600).

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

133121010120 is a wasteful number, since it uses less digits than its factorization.

133121010120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158477414 (or 158477410 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 133121010120 its reverse (21010121331), we get a palindrome (154131131451).

The spelling of 133121010120 in words is "one hundred thirty-three billion, one hundred twenty-one million, ten thousand, one hundred twenty".