22341240021 has 4 divisors (see below), whose sum is σ = 29788320032. Its totient is φ = 14894160012.

The previous prime is 22341240007. The next prime is 22341240037. The reversal of 22341240021 is 12004214322.

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 22341240021 - 2²⁶ = 22274131157 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 22341240021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22341240091) 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, 3723540001 + ... + 3723540006.

It is an arithmetic number, because the mean of its divisors is an integer number (7447080008).

Almost surely, 2^22341240021 is an apocalyptic number.

It is an amenable number.

22341240021 is a deficient number, since it is larger than the sum of its proper divisors (7447080011).

22341240021 is an equidigital number, since it uses as much as digits as its factorization.

22341240021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7447080010.

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

Adding to 22341240021 its reverse (12004214322), we get a palindrome (34345454343).

The spelling of 22341240021 in words is "twenty-two billion, three hundred forty-one million, two hundred forty thousand, twenty-one".