423123102221 has 4 divisors (see below), whose sum is σ = 445392739200. Its totient is φ = 400853465244.

The previous prime is 423123102209. The next prime is 423123102251. The reversal of 423123102221 is 122201321324.

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 not a de Polignac number, because 423123102221 - 2¹⁴ = 423123085837 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 (423123102251) 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, 11134818461 + ... + 11134818498.

It is an arithmetic number, because the mean of its divisors is an integer number (111348184800).

Almost surely, 2^423123102221 is an apocalyptic number.

It is an amenable number.

423123102221 is a deficient number, since it is larger than the sum of its proper divisors (22269636979).

423123102221 is a wasteful number, since it uses less digits than its factorization.

423123102221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22269636978.

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

Adding to 423123102221 its reverse (122201321324), we get a palindrome (545324423545).

The spelling of 423123102221 in words is "four hundred twenty-three billion, one hundred twenty-three million, one hundred two thousand, two hundred twenty-one".