221980435263 has 12 divisors (see below), whose sum is σ = 321649888248. Its totient is φ = 147520119120.

The previous prime is 221980435241. The next prime is 221980435267. The reversal of 221980435263 is 362534089122.

221980435263 is a `hidden beast` number, since 2 + 2 + 1 + 9 + 80 + 43 + 526 + 3 = 666.

It is not a de Polignac number, because 221980435263 - 2³³ = 213390500671 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221980435267) 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, 38900133 + ... + 38905838.

It is an arithmetic number, because the mean of its divisors is an integer number (26804157354).

Almost surely, 2^221980435263 is an apocalyptic number.

221980435263 is a deficient number, since it is larger than the sum of its proper divisors (99669452985).

221980435263 is a wasteful number, since it uses less digits than its factorization.

221980435263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77806294 (or 77806291 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The spelling of 221980435263 in words is "two hundred twenty-one billion, nine hundred eighty million, four hundred thirty-five thousand, two hundred sixty-three".