33454156221 has 16 divisors (see below), whose sum is σ = 49818517120. Its totient is φ = 22187208960.

The previous prime is 33454156193. The next prime is 33454156243. The reversal of 33454156221 is 12265145433.

33454156221 is a `hidden beast` number, since 3 + 34 + 5 + 41 + 562 + 21 = 666.

It is not a de Polignac number, because 33454156221 - 2⁶ = 33454156157 is a prime.

It is a super-2 number, since 2×33454156221² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33454156291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3204745 + ... + 3215166.

It is an arithmetic number, because the mean of its divisors is an integer number (3113657320).

Almost surely, 2^33454156221 is an apocalyptic number.

It is an amenable number.

33454156221 is a deficient number, since it is larger than the sum of its proper divisors (16364360899).

33454156221 is a wasteful number, since it uses less digits than its factorization.

33454156221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6420113 (or 6420107 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The spelling of 33454156221 in words is "thirty-three billion, four hundred fifty-four million, one hundred fifty-six thousand, two hundred twenty-one".