21101012300 has 18 divisors (see below), whose sum is σ = 45789196908. Its totient is φ = 8440404880.

The previous prime is 21101012293. The next prime is 21101012329. The reversal of 21101012300 is 321010112.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 105504962 + ... + 105505161.

Almost surely, 2^21101012300 is an apocalyptic number.

21101012300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21101012300 is an abundant number, since it is smaller than the sum of its proper divisors (24688184608).

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

21101012300 is a wasteful number, since it uses less digits than its factorization.

21101012300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211010137 (or 211010130 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 21101012300 its reverse (321010112), we get a palindrome (21422022412).

The spelling of 21101012300 in words is "twenty-one billion, one hundred one million, twelve thousand, three hundred".