223031100021 has 16 divisors (see below), whose sum is σ = 302639016960. Its totient is φ = 146075308400.

The previous prime is 223031099989. The next prime is 223031100079. The reversal of 223031100021 is 120001130322.

It is a cyclic number.

It is not a de Polignac number, because 223031100021 - 2⁵ = 223031099989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223031100091) 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, 2457405 + ... + 2546546.

It is an arithmetic number, because the mean of its divisors is an integer number (18914938560).

Almost surely, 2^223031100021 is an apocalyptic number.

It is an amenable number.

223031100021 is a deficient number, since it is larger than the sum of its proper divisors (79607916939).

223031100021 is a wasteful number, since it uses less digits than its factorization.

223031100021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5004216.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 223031100021 its reverse (120001130322), we get a palindrome (343032230343).

The spelling of 223031100021 in words is "two hundred twenty-three billion, thirty-one million, one hundred thousand, twenty-one".