21322210513 has 4 divisors (see below), whose sum is σ = 22249263168. Its totient is φ = 20395157860.

The previous prime is 21322210439. The next prime is 21322210519. The reversal of 21322210513 is 31501222312.

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 21322210513 - 2²¹ = 21320113361 is a prime.

It is a super-2 number, since 2×21322210513² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21322210519) 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, 463526293 + ... + 463526338.

It is an arithmetic number, because the mean of its divisors is an integer number (5562315792).

Almost surely, 2^21322210513 is an apocalyptic number.

21322210513 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

21322210513 is a deficient number, since it is larger than the sum of its proper divisors (927052655).

21322210513 is an equidigital number, since it uses as much as digits as its factorization.

21322210513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 927052654.

The product of its (nonzero) digits is 720, while the sum is 22.

Adding to 21322210513 its reverse (31501222312), we get a palindrome (52823432825).

The spelling of 21322210513 in words is "twenty-one billion, three hundred twenty-two million, two hundred ten thousand, five hundred thirteen".