133121124552 has 128 divisors (see below), whose sum is σ = 364917974400. Its totient is φ = 40219711488.

The previous prime is 133121124541. The next prime is 133121124569. The reversal of 133121124552 is 255421121331.

It is a happy 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, 6616524 + ... + 6636612.

It is an arithmetic number, because the mean of its divisors is an integer number (2850921675).

Almost surely, 2^133121124552 is an apocalyptic number.

133121124552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133121124552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (182458987200).

133121124552 is an abundant number, since it is smaller than the sum of its proper divisors (231796849848).

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

133121124552 is a wasteful number, since it uses less digits than its factorization.

133121124552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20495 (or 20491 counting only the distinct ones).

The product of its digits is 7200, while the sum is 30.

Adding to 133121124552 its reverse (255421121331), we get a palindrome (388542245883).

The spelling of 133121124552 in words is "one hundred thirty-three billion, one hundred twenty-one million, one hundred twenty-four thousand, five hundred fifty-two".