21300344022 has 64 divisors (see below), whose sum is σ = 46850711040. Its totient is φ = 6425971200.

The previous prime is 21300344011. The next prime is 21300344027. The reversal of 21300344022 is 22044300312.

It is a super-2 number, since 2×21300344022² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21300344022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21300344027) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2305372 + ... + 2314592.

It is an arithmetic number, because the mean of its divisors is an integer number (732042360).

Almost surely, 2^21300344022 is an apocalyptic number.

21300344022 is an abundant number, since it is smaller than the sum of its proper divisors (25550367018).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21300344022 is a wasteful number, since it uses less digits than its factorization.

21300344022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10149.

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 21300344022 its reverse (22044300312), we get a palindrome (43344644334).

The spelling of 21300344022 in words is "twenty-one billion, three hundred million, three hundred forty-four thousand, twenty-two".