21010000101 has 32 divisors (see below), whose sum is σ = 29614464000. Its totient is φ = 13212597888.

The previous prime is 21010000093. The next prime is 21010000111. The reversal of 21010000101 is 10100001012.

It is not a de Polignac number, because 21010000101 - 2³ = 21010000093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21010000101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21010000111) 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, 21372856 + ... + 21373838.

It is an arithmetic number, because the mean of its divisors is an integer number (925452000).

Almost surely, 2^21010000101 is an apocalyptic number.

It is an amenable number.

21010000101 is a deficient number, since it is larger than the sum of its proper divisors (8604463899).

21010000101 is a wasteful number, since it uses less digits than its factorization.

21010000101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2233.

The product of its (nonzero) digits is 2, while the sum is 6.

Adding to 21010000101 its reverse (10100001012), we get a palindrome (31110001113).

It can be divided in two parts, 2 and 1010000101, that multiplied together give a palindrome (2020000202).

The spelling of 21010000101 in words is "twenty-one billion, ten million, one hundred one", and thus it is an aban number.