133416751221 has 24 divisors (see below), whose sum is σ = 207550586880. Its totient is φ = 82097307936.

The previous prime is 133416751157. The next prime is 133416751231. The reversal of 133416751221 is 122157614331.

133416751221 is a `hidden beast` number, since 13 + 3 + 416 + 7 + 5 + 1 + 221 = 666.

It is not a de Polignac number, because 133416751221 - 2⁶ = 133416751157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133416751231) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2557420 + ... + 2609066.

It is an arithmetic number, because the mean of its divisors is an integer number (8647941120).

Almost surely, 2^133416751221 is an apocalyptic number.

It is an amenable number.

133416751221 is a deficient number, since it is larger than the sum of its proper divisors (74133835659).

133416751221 is a wasteful number, since it uses less digits than its factorization.

133416751221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73745 (or 73742 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The spelling of 133416751221 in words is "one hundred thirty-three billion, four hundred sixteen million, seven hundred fifty-one thousand, two hundred twenty-one".