221023215263223 has 32 divisors (see below), whose sum is σ = 347336909637120. Its totient is φ = 138427702358400.

The previous prime is 221023215263219. The next prime is 221023215263237. The reversal of 221023215263223 is 322362512320122.

221023215263223 is a `hidden beast` number, since 2 + 2 + 1 + 0 + 2 + 3 + 2 + 15 + 2 + 632 + 2 + 3 = 666.

It is not a de Polignac number, because 221023215263223 - 2² = 221023215263219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221023215263723) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 439906203 + ... + 440408348.

It is an arithmetic number, because the mean of its divisors is an integer number (10854278426160).

Almost surely, 2^{221023215263223} is an apocalyptic number.

221023215263223 is a deficient number, since it is larger than the sum of its proper divisors (126313694373897).

221023215263223 is a wasteful number, since it uses less digits than its factorization.

221023215263223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 880315124 (or 880315118 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

Adding to 221023215263223 its reverse (322362512320122), we get a palindrome (543385727583345).

The spelling of 221023215263223 in words is "two hundred twenty-one trillion, twenty-three billion, two hundred fifteen million, two hundred sixty-three thousand, two hundred twenty-three".