22011440400020 has 24 divisors (see below), whose sum is σ = 46241025331200. Its totient is φ = 8801337971232.

The previous prime is 22011440400007. The next prime is 22011440400101. The reversal of 22011440400020 is 2000404411022.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 22011440399965 and 22011440400001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 202331060 + ... + 202439819.

It is an arithmetic number, because the mean of its divisors is an integer number (1926709388800).

Almost surely, 2^{22011440400020} is an apocalyptic number.

22011440400020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22011440400020 is an abundant number, since it is smaller than the sum of its proper divisors (24229584931180).

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

22011440400020 is a wasteful number, since it uses less digits than its factorization.

22011440400020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404773607 (or 404773605 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 22011440400020 its reverse (2000404411022), we get a palindrome (24011844811042).

The spelling of 22011440400020 in words is "twenty-two trillion, eleven billion, four hundred forty million, four hundred thousand, twenty".