20422213200 has 90 divisors (see below), whose sum is σ = 70870765134. Its totient is φ = 5445922560.

The previous prime is 20422213193. The next prime is 20422213243. The reversal of 20422213200 is 231222402.

20422213200 is a `hidden beast` number, since 20 + 422 + 21 + 3 + 200 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 1158993936 + 19263219264 = 34044^2 + 138792^2 .

It is a tau number, because it is divible by the number of its divisors (90).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2832819 + ... + 2840018.

Almost surely, 2^20422213200 is an apocalyptic number.

20422213200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20422213200 is an abundant number, since it is smaller than the sum of its proper divisors (50448551934).

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

20422213200 is a wasteful number, since it uses less digits than its factorization.

20422213200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5672861 (or 5672847 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 20422213200 its reverse (231222402), we get a palindrome (20653435602).

The spelling of 20422213200 in words is "twenty billion, four hundred twenty-two million, two hundred thirteen thousand, two hundred".