133511023212 has 24 divisors (see below), whose sum is σ = 356029395456. Its totient is φ = 38146006608.

The previous prime is 133511023207. The next prime is 133511023253. The reversal of 133511023212 is 212320115331.

It is a happy 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, 794708388 + ... + 794708555.

It is an arithmetic number, because the mean of its divisors is an integer number (14834558144).

Almost surely, 2^133511023212 is an apocalyptic number.

133511023212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

133511023212 is an abundant number, since it is smaller than the sum of its proper divisors (222518372244).

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

133511023212 is a wasteful number, since it uses less digits than its factorization.

133511023212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1589416957 (or 1589416955 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

Adding to 133511023212 its reverse (212320115331), we get a palindrome (345831138543).

The spelling of 133511023212 in words is "one hundred thirty-three billion, five hundred eleven million, twenty-three thousand, two hundred twelve".