133220121000 has 64 divisors (see below), whose sum is σ = 415646786880. Its totient is φ = 35525364800.

The previous prime is 133220120989. The next prime is 133220121079. The reversal of 133220121000 is 121022331.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22200354 + ... + 22206353.

It is an arithmetic number, because the mean of its divisors is an integer number (6494481045).

Almost surely, 2^133220121000 is an apocalyptic number.

133220121000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133220121000 is an abundant number, since it is smaller than the sum of its proper divisors (282426665880).

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

133220121000 is a wasteful number, since it uses less digits than its factorization.

133220121000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44406731 (or 44406717 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 133220121000 its reverse (121022331), we get a palindrome (133341143331).

The spelling of 133220121000 in words is "one hundred thirty-three billion, two hundred twenty million, one hundred twenty-one thousand".