21223552300 has 36 divisors (see below), whose sum is σ = 46191843880. Its totient is φ = 8464216320.

The previous prime is 21223552237. The next prime is 21223552327. The reversal of 21223552300 is 325532212.

It is a Harshad number since it is a multiple of its sum of digits (25).

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, 281190 + ... + 348589.

Almost surely, 2^21223552300 is an apocalyptic number.

21223552300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21223552300 is an abundant number, since it is smaller than the sum of its proper divisors (24968291580).

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

21223552300 is a wasteful number, since it uses less digits than its factorization.

21223552300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 630130 (or 630123 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

The spelling of 21223552300 in words is "twenty-one billion, two hundred twenty-three million, five hundred fifty-two thousand, three hundred".