21022102040440 has 64 divisors (see below), whose sum is σ = 48947758272000. Its totient is φ = 8116059463680.

The previous prime is 21022102040437. The next prime is 21022102040449. The reversal of 21022102040440 is 4404020122012.

It is a super-2 number, since 2×21022102040440² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21022102040449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 192280 + ... + 6487000.

It is an arithmetic number, because the mean of its divisors is an integer number (764808723000).

Almost surely, 2^{21022102040440} is an apocalyptic number.

21022102040440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21022102040440 is an abundant number, since it is smaller than the sum of its proper divisors (27925656231560).

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

21022102040440 is a wasteful number, since it uses less digits than its factorization.

21022102040440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6297640 (or 6297636 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 21022102040440 its reverse (4404020122012), we get a palindrome (25426122162452).

The spelling of 21022102040440 in words is "twenty-one trillion, twenty-two billion, one hundred two million, forty thousand, four hundred forty".