22020221002000 has 80 divisors (see below), whose sum is σ = 57340655556912. Its totient is φ = 8130543129600.

The previous prime is 22020221001923. The next prime is 22020221002027. The reversal of 22020221002000 is 20012202022.

It can be written as a sum of positive squares in 8 ways, for example, as 3705963807744 + 18314257194256 = 1925088^2 + 4279516^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (13).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 423439789 + ... + 423491788.

Almost surely, 2^{22020221002000} is an apocalyptic number.

22020221002000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22020221002000 is an abundant number, since it is smaller than the sum of its proper divisors (35320434554912).

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

22020221002000 is a wasteful number, since it uses less digits than its factorization.

22020221002000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 846931613 (or 846931597 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

Adding to 22020221002000 its reverse (20012202022), we get a palindrome (22040233204022).

The spelling of 22020221002000 in words is "twenty-two trillion, twenty billion, two hundred twenty-one million, two thousand".