133111333220 has 12 divisors (see below), whose sum is σ = 279533799804. Its totient is φ = 53244533280.

The previous prime is 133111333181. The next prime is 133111333231. The reversal of 133111333220 is 22333111331.

It can be written as a sum of positive squares in 2 ways, for example, as 94131148864 + 38980184356 = 306808^2 + 197434^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3327783311 + ... + 3327783350.

It is an arithmetic number, because the mean of its divisors is an integer number (23294483317).

Almost surely, 2^133111333220 is an apocalyptic number.

133111333220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133111333220 is an abundant number, since it is smaller than the sum of its proper divisors (146422466584).

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

133111333220 is a wasteful number, since it uses less digits than its factorization.

133111333220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6655566670 (or 6655566668 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 133111333220 its reverse (22333111331), we get a palindrome (155444444551).

The spelling of 133111333220 in words is "one hundred thirty-three billion, one hundred eleven million, three hundred thirty-three thousand, two hundred twenty".