221423104013 has 4 divisors (see below), whose sum is σ = 222781528128. Its totient is φ = 220064679900.

The previous prime is 221423103991. The next prime is 221423104073. The reversal of 221423104013 is 310401324122.

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, and also an emirpimes, since its reverse is a distinct semiprime: 310401324122 = 2 ⋅155200662061.

It is a cyclic number.

It is not a de Polignac number, because 221423104013 - 2⁸ = 221423103757 is a prime.

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 221423104013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221423104073) 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, 679211813 + ... + 679212138.

It is an arithmetic number, because the mean of its divisors is an integer number (55695382032).

Almost surely, 2^221423104013 is an apocalyptic number.

It is an amenable number.

221423104013 is a deficient number, since it is larger than the sum of its proper divisors (1358424115).

221423104013 is a wasteful number, since it uses less digits than its factorization.

221423104013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1358424114.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 221423104013 its reverse (310401324122), we get a palindrome (531824428135).

The spelling of 221423104013 in words is "two hundred twenty-one billion, four hundred twenty-three million, one hundred four thousand, thirteen".