23142022421 has 4 divisors (see below), whose sum is σ = 26448025632. Its totient is φ = 19836019212.

The previous prime is 23142022403. The next prime is 23142022427. The reversal of 23142022421 is 12422024132.

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 23142022421 - 2⁶ = 23142022357 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23142022427) 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, 1653001595 + ... + 1653001608.

It is an arithmetic number, because the mean of its divisors is an integer number (6612006408).

Almost surely, 2^23142022421 is an apocalyptic number.

It is an amenable number.

23142022421 is a deficient number, since it is larger than the sum of its proper divisors (3306003211).

23142022421 is an equidigital number, since it uses as much as digits as its factorization.

23142022421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3306003210.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 23142022421 its reverse (12422024132), we get a palindrome (35564046553).

The spelling of 23142022421 in words is "twenty-three billion, one hundred forty-two million, twenty-two thousand, four hundred twenty-one".