223030013021 has 4 divisors (see below), whose sum is σ = 223073587200. Its totient is φ = 222986438844.

The previous prime is 223030012999. The next prime is 223030013057. The reversal of 223030013021 is 120310030322.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-223030013021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223030018021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21779411 + ... + 21789648.

It is an arithmetic number, because the mean of its divisors is an integer number (55768396800).

Almost surely, 2^223030013021 is an apocalyptic number.

It is an amenable number.

223030013021 is a deficient number, since it is larger than the sum of its proper divisors (43574179).

223030013021 is an equidigital number, since it uses as much as digits as its factorization.

223030013021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43574178.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 223030013021 its reverse (120310030322), we get a palindrome (343340043343).

The spelling of 223030013021 in words is "two hundred twenty-three billion, thirty million, thirteen thousand, twenty-one".