2101010100102 has 48 divisors (see below), whose sum is σ = 4557762630720. Its totient is φ = 699479565696.

The previous prime is 2101010100011. The next prime is 2101010100173. The reversal of 2101010100102 is 2010010101012.

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 23 ways as a sum of consecutive naturals, for example, 69811474 + ... + 69841562.

It is an arithmetic number, because the mean of its divisors is an integer number (94953388140).

Almost surely, 2^{2101010100102} is an apocalyptic number.

2101010100102 is an abundant number, since it is smaller than the sum of its proper divisors (2456752530618).

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

2101010100102 is a wasteful number, since it uses less digits than its factorization.

2101010100102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34717 (or 34714 counting only the distinct ones).

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

Adding to 2101010100102 its reverse (2010010101012), we get a palindrome (4111020201114).

The spelling of 2101010100102 in words is "two trillion, one hundred one billion, ten million, one hundred thousand, one hundred two".