20000100021102 has 64 divisors (see below), whose sum is σ = 44486876712960. Its totient is φ = 6660371289312.

The previous prime is 20000100021071. The next prime is 20000100021107. The reversal of 20000100021102 is 20112000100002.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20000100021107) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 275815783 + ... + 275888285.

It is an arithmetic number, because the mean of its divisors is an integer number (695107448640).

Almost surely, 2^{20000100021102} is an apocalyptic number.

20000100021102 is an abundant number, since it is smaller than the sum of its proper divisors (24486776691858).

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

20000100021102 is a wasteful number, since it uses less digits than its factorization.

20000100021102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77294 (or 77288 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 20000100021102 its reverse (20112000100002), we get a palindrome (40112100121104).

The spelling of 20000100021102 in words is "twenty trillion, one hundred million, twenty-one thousand, one hundred two".