100021220002000 has 80 divisors (see below), whose sum is σ = 263837792746944. Its totient is φ = 36371352720000.

The previous prime is 100021220001973. The next prime is 100021220002129. The reversal of 100021220002000 is 200022120001.

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 (10).

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, 2273187546 + ... + 2273231545.

Almost surely, 2^{100021220002000} is an apocalyptic number.

100021220002000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100021220002000 is an abundant number, since it is smaller than the sum of its proper divisors (163816572744944).

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

100021220002000 is a wasteful number, since it uses less digits than its factorization.

100021220002000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4546419125 (or 4546419109 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 100021220002000 its reverse (200022120001), we get a palindrome (100221242122001).

The spelling of 100021220002000 in words is "one hundred trillion, twenty-one billion, two hundred twenty million, two thousand".