20210000100102 has 64 divisors (see below), whose sum is σ = 45673672032000. Its totient is φ = 6622289374464.

The previous prime is 20210000100079. The next prime is 20210000100109. The reversal of 20210000100102 is 20100100001202.

It is a super-2 number, since 2×20210000100102² (a number of 27 digits) contains 22 as substring.

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 (20210000100109) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 139993974 + ... + 140138262.

It is an arithmetic number, because the mean of its divisors is an integer number (713651125500).

Almost surely, 2^{20210000100102} is an apocalyptic number.

20210000100102 is an abundant number, since it is smaller than the sum of its proper divisors (25463671931898).

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

20210000100102 is a wasteful number, since it uses less digits than its factorization.

20210000100102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188322 (or 188316 counting only the distinct ones).

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

Adding to 20210000100102 its reverse (20100100001202), we get a palindrome (40310100101304).

The spelling of 20210000100102 in words is "twenty trillion, two hundred ten billion, one hundred thousand, one hundred two".