21111223202300 has 72 divisors (see below), whose sum is σ = 57115454793600. Its totient is φ = 6580121515200.

The previous prime is 21111223202281. The next prime is 21111223202323. The reversal of 21111223202300 is 320232211112.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1370850950 + ... + 1370866349.

Almost surely, 2^{21111223202300} is an apocalyptic number.

21111223202300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21111223202300 is an abundant number, since it is smaller than the sum of its proper divisors (36004231591300).

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

21111223202300 is a wasteful number, since it uses less digits than its factorization.

21111223202300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2741717331 (or 2741717324 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 21111223202300 its reverse (320232211112), we get a palindrome (21431455413412).

The spelling of 21111223202300 in words is "twenty-one trillion, one hundred eleven billion, two hundred twenty-three million, two hundred two thousand, three hundred".