221213010223 has 4 divisors (see below), whose sum is σ = 222901659288. Its totient is φ = 219524361160.

The previous prime is 221213010197. The next prime is 221213010281. The reversal of 221213010223 is 322010312122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 221213010223 - 2⁵ = 221213010191 is a prime.

It is a super-2 number, since 2×221213010223² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 221213010223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221213010923) 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, 844324336 + ... + 844324597.

It is an arithmetic number, because the mean of its divisors is an integer number (55725414822).

Almost surely, 2^221213010223 is an apocalyptic number.

221213010223 is a deficient number, since it is larger than the sum of its proper divisors (1688649065).

221213010223 is a wasteful number, since it uses less digits than its factorization.

221213010223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1688649064.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 221213010223 its reverse (322010312122), we get a palindrome (543223322345).

The spelling of 221213010223 in words is "two hundred twenty-one billion, two hundred thirteen million, ten thousand, two hundred twenty-three".