10423402221 has 4 divisors (see below), whose sum is σ = 13897869632. Its totient is φ = 6948934812.

The previous prime is 10423402159. The next prime is 10423402259. The reversal of 10423402221 is 12220432401.

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: 12220432401 = 3 ⋅4073477467.

It is not a de Polignac number, because 10423402221 - 2¹³ = 10423394029 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 (10423402021) 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, 1737233701 + ... + 1737233706.

It is an arithmetic number, because the mean of its divisors is an integer number (3474467408).

Almost surely, 2^10423402221 is an apocalyptic number.

It is an amenable number.

10423402221 is a deficient number, since it is larger than the sum of its proper divisors (3474467411).

10423402221 is an equidigital number, since it uses as much as digits as its factorization.

10423402221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3474467410.

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

Adding to 10423402221 its reverse (12220432401), we get a palindrome (22643834622).

The spelling of 10423402221 in words is "ten billion, four hundred twenty-three million, four hundred two thousand, two hundred twenty-one".