133123231113021 has 64 divisors (see below), whose sum is σ = 198187173212160. Its totient is φ = 88314608655360.

The previous prime is 133123231113017. The next prime is 133123231113043. The reversal of 133123231113021 is 120311132321331.

133123231113021 is a `hidden beast` number, since 1 + 3 + 3 + 12 + 32 + 311 + 1 + 302 + 1 = 666.

It is not a de Polignac number, because 133123231113021 - 2² = 133123231113017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133123231113221) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 19273665450 + ... + 19273672356.

It is an arithmetic number, because the mean of its divisors is an integer number (3096674581440).

Almost surely, 2^{133123231113021} is an apocalyptic number.

It is an amenable number.

133123231113021 is a deficient number, since it is larger than the sum of its proper divisors (65063942099139).

133123231113021 is a wasteful number, since it uses less digits than its factorization.

133123231113021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11231 (or 11225 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

Adding to 133123231113021 its reverse (120311132321331), we get a palindrome (253434363434352).

The spelling of 133123231113021 in words is "one hundred thirty-three trillion, one hundred twenty-three billion, two hundred thirty-one million, one hundred thirteen thousand, twenty-one".