21303211100 has 36 divisors (see below), whose sum is σ = 46813149600. Its totient is φ = 8413416960.

The previous prime is 21303211099. The next prime is 21303211159. The reversal of 21303211100 is 111230312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1340405 + ... + 1356204.

Almost surely, 2^21303211100 is an apocalyptic number.

21303211100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21303211100 is an abundant number, since it is smaller than the sum of its proper divisors (25509938500).

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

21303211100 is a wasteful number, since it uses less digits than its factorization.

21303211100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2696702 (or 2696695 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 21303211100 its reverse (111230312), we get a palindrome (21414441412).

The spelling of 21303211100 in words is "twenty-one billion, three hundred three million, two hundred eleven thousand, one hundred".