22000022000020 has 48 divisors (see below), whose sum is σ = 46256866741008. Its totient is φ = 8789190312960.

The previous prime is 22000022000017. The next prime is 22000022000039. The reversal of 22000022000020 is 2000022000022.

It can be written as a sum of positive squares in 8 ways, for example, as 504892671364 + 21495129328656 = 710558^2 + 4636284^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 22000021999970 and 22000022000006.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79961490 + ... + 80236150.

It is an arithmetic number, because the mean of its divisors is an integer number (963684723771).

Almost surely, 2^{22000022000020} is an apocalyptic number.

22000022000020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22000022000020 is an abundant number, since it is smaller than the sum of its proper divisors (24256844740988).

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

22000022000020 is a wasteful number, since it uses less digits than its factorization.

22000022000020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279580 (or 279578 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 10.

Adding to 22000022000020 its reverse (2000022000022), we get a palindrome (24000044000042).

The spelling of 22000022000020 in words is "twenty-two trillion, twenty-two million, twenty", and thus it is an aban number and an uban number.