223521053452 has 24 divisors (see below), whose sum is σ = 392831034512. Its totient is φ = 111284193600.

The previous prime is 223521053383. The next prime is 223521053467. The reversal of 223521053452 is 254350125322.

It is a super-2 number, since 2×223521053452² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1491802 + ... + 1634782.

Almost surely, 2^223521053452 is an apocalyptic number.

It is an amenable number.

223521053452 is a deficient number, since it is larger than the sum of its proper divisors (169309981060).

223521053452 is a wasteful number, since it uses less digits than its factorization.

223521053452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144649 (or 144647 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 34.

Adding to 223521053452 its reverse (254350125322), we get a palindrome (477871178774).

The spelling of 223521053452 in words is "two hundred twenty-three billion, five hundred twenty-one million, fifty-three thousand, four hundred fifty-two".