221136550358373 has 12 divisors (see below), whose sum is σ = 343990189446540. Its totient is φ = 136084030989696.

The previous prime is 221136550358263. The next prime is 221136550358377. The reversal of 221136550358373 is 373853055631122.

221136550358373 is a `hidden beast` number, since 2 + 2 + 1 + 1 + 3 + 6 + 5 + 50 + 3 + 583 + 7 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 107395541165124 + 113741009193249 = 10363182^2 + 10664943^2 .

It is not a de Polignac number, because 221136550358373 - 2¹³ = 221136550350181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221136550358377) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 945027992868 + ... + 945027993101.

It is an arithmetic number, because the mean of its divisors is an integer number (28665849120545).

Almost surely, 2^{221136550358373} is an apocalyptic number.

It is an amenable number.

221136550358373 is a deficient number, since it is larger than the sum of its proper divisors (122853639088167).

221136550358373 is a wasteful number, since it uses less digits than its factorization.

221136550358373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1890055985988 (or 1890055985985 counting only the distinct ones).

The product of its (nonzero) digits is 13608000, while the sum is 54.

The spelling of 221136550358373 in words is "two hundred twenty-one trillion, one hundred thirty-six billion, five hundred fifty million, three hundred fifty-eight thousand, three hundred seventy-three".