133156093221 has 6 divisors (see below), whose sum is σ = 192336579110. Its totient is φ = 88770728808.

The previous prime is 133156093219. The next prime is 133156093223. The reversal of 133156093221 is 122390651331.

133156093221 is a `hidden beast` number, since 1 + 3 + 3 + 1 + 560 + 93 + 2 + 2 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (133156093219) and next prime (133156093223).

It can be written as a sum of positive squares in only one way, i.e., 108824772996 + 24331320225 = 329886^2 + 155985^2 .

It is not a de Polignac number, because 133156093221 - 2¹ = 133156093219 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133156093223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7397560726 + ... + 7397560743.

Almost surely, 2^133156093221 is an apocalyptic number.

It is an amenable number.

133156093221 is a deficient number, since it is larger than the sum of its proper divisors (59180485889).

133156093221 is a wasteful number, since it uses less digits than its factorization.

133156093221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14795121475 (or 14795121472 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The spelling of 133156093221 in words is "one hundred thirty-three billion, one hundred fifty-six million, ninety-three thousand, two hundred twenty-one".