21103221032300 has 36 divisors (see below), whose sum is σ = 49957079609976. Its totient is φ = 7673898556800.

The previous prime is 21103221032297. The next prime is 21103221032353. The reversal of 21103221032300 is 323012230112.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 9592372097 + ... + 9592374296.

Almost surely, 2^{21103221032300} is an apocalyptic number.

21103221032300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21103221032300 is an abundant number, since it is smaller than the sum of its proper divisors (28853858577676).

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

21103221032300 is a wasteful number, since it uses less digits than its factorization.

21103221032300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19184746418 (or 19184746411 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21103221032300 its reverse (323012230112), we get a palindrome (21426233262412).

The spelling of 21103221032300 in words is "twenty-one trillion, one hundred three billion, two hundred twenty-one million, thirty-two thousand, three hundred".