21322315041 has 4 divisors (see below), whose sum is σ = 28429753392. Its totient is φ = 14214876692.

The previous prime is 21322315037. The next prime is 21322315051. The reversal of 21322315041 is 14051322312.

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 21322315041 - 2² = 21322315037 is a prime.

It is a super-2 number, since 2×21322315041² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21322315051) 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, 3553719171 + ... + 3553719176.

It is an arithmetic number, because the mean of its divisors is an integer number (7107438348).

Almost surely, 2^21322315041 is an apocalyptic number.

It is an amenable number.

21322315041 is a deficient number, since it is larger than the sum of its proper divisors (7107438351).

21322315041 is an equidigital number, since it uses as much as digits as its factorization.

21322315041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7107438350.

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 21322315041 its reverse (14051322312), we get a palindrome (35373637353).

The spelling of 21322315041 in words is "twenty-one billion, three hundred twenty-two million, three hundred fifteen thousand, forty-one".