20202221120100 has 36 divisors (see below), whose sum is σ = 58451759775024. Its totient is φ = 5387258965280.

The previous prime is 20202221120093. The next prime is 20202221120113. The reversal of 20202221120100 is 102112220202.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 20202221120100.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33670368234 + ... + 33670368833.

Almost surely, 2^{20202221120100} is an apocalyptic number.

20202221120100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20202221120100 is an abundant number, since it is smaller than the sum of its proper divisors (38249538654924).

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

20202221120100 is a wasteful number, since it uses less digits than its factorization.

20202221120100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67340737084 (or 67340737077 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20202221120100 its reverse (102112220202), we get a palindrome (20304333340302).

The spelling of 20202221120100 in words is "twenty trillion, two hundred two billion, two hundred twenty-one million, one hundred twenty thousand, one hundred".