221224022013 has 4 divisors (see below), whose sum is σ = 294965362688. Its totient is φ = 147482681340.

The previous prime is 221224022009. The next prime is 221224022021. The reversal of 221224022013 is 310220422122.

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 not a de Polignac number, because 221224022013 - 2² = 221224022009 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 (221224020013) 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, 36870670333 + ... + 36870670338.

It is an arithmetic number, because the mean of its divisors is an integer number (73741340672).

Almost surely, 2^221224022013 is an apocalyptic number.

It is an amenable number.

221224022013 is a deficient number, since it is larger than the sum of its proper divisors (73741340675).

221224022013 is an equidigital number, since it uses as much as digits as its factorization.

221224022013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73741340674.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 221224022013 its reverse (310220422122), we get a palindrome (531444444135).

The spelling of 221224022013 in words is "two hundred twenty-one billion, two hundred twenty-four million, twenty-two thousand, thirteen".