133321101990 has 64 divisors (see below), whose sum is σ = 323681702400. Its totient is φ = 35140241664.

The previous prime is 133321101989. The next prime is 133321102009. The reversal of 133321101990 is 99101123331.

It is a Curzon number.

It is a congruent number.

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, 9239001 + ... + 9253419.

It is an arithmetic number, because the mean of its divisors is an integer number (5057526600).

Almost surely, 2^133321101990 is an apocalyptic number.

133321101990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133321101990 is an abundant number, since it is smaller than the sum of its proper divisors (190360600410).

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

133321101990 is a wasteful number, since it uses less digits than its factorization.

133321101990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17981.

The product of its (nonzero) digits is 4374, while the sum is 33.

The spelling of 133321101990 in words is "one hundred thirty-three billion, three hundred twenty-one million, one hundred one thousand, nine hundred ninety".