133323131220 has 24 divisors (see below), whose sum is σ = 373304767584. Its totient is φ = 35552834976.

The previous prime is 133323131213. The next prime is 133323131243. The reversal of 133323131220 is 22131323331.

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, 1111026034 + ... + 1111026153.

It is an arithmetic number, because the mean of its divisors is an integer number (15554365316).

Almost surely, 2^133323131220 is an apocalyptic number.

133323131220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133323131220 is an abundant number, since it is smaller than the sum of its proper divisors (239981636364).

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

133323131220 is a wasteful number, since it uses less digits than its factorization.

133323131220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2222052199 (or 2222052197 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 133323131220 its reverse (22131323331), we get a palindrome (155454454551).

The spelling of 133323131220 in words is "one hundred thirty-three billion, three hundred twenty-three million, one hundred thirty-one thousand, two hundred twenty".