21301000100 has 36 divisors (see below), whose sum is σ = 47006626800. Its totient is φ = 8375984160.

The previous prime is 21301000099. The next prime is 21301000109. The reversal of 21301000100 is 100010312.

It is not an unprimeable number, because it can be changed into a prime (21301000109) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1799270 + ... + 1811069.

Almost surely, 2^21301000100 is an apocalyptic number.

21301000100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21301000100 is an abundant number, since it is smaller than the sum of its proper divisors (25705626700).

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

21301000100 is a wasteful number, since it uses less digits than its factorization.

21301000100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3610412 (or 3610405 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 8.

Adding to 21301000100 its reverse (100010312), we get a palindrome (21401010412).

The spelling of 21301000100 in words is "twenty-one billion, three hundred one million, one hundred", and thus it is an aban number.