20100021111000 has 192 divisors, whose sum is σ = 71934429041280. Its totient is φ = 5044711142400.

The previous prime is 20100021110999. The next prime is 20100021111019. The reversal of 20100021111000 is 11112000102.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 65533344 + ... + 65839343.

It is an arithmetic number, because the mean of its divisors is an integer number (374658484590).

Almost surely, 2^{20100021111000} is an apocalyptic number.

20100021111000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20100021111000 is an abundant number, since it is smaller than the sum of its proper divisors (51834407930280).

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

20100021111000 is a wasteful number, since it uses less digits than its factorization.

20100021111000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131372731 (or 131372714 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 20100021111000 its reverse (11112000102), we get a palindrome (20111133111102).

The spelling of 20100021111000 in words is "twenty trillion, one hundred billion, twenty-one million, one hundred eleven thousand".