21231022030200 has 72 divisors (see below), whose sum is σ = 71300848990800. Its totient is φ = 5661605874240.

The previous prime is 21231022030199. The next prime is 21231022030237. The reversal of 21231022030200 is 203022013212.

21231022030200 is a `hidden beast` number, since 212 + 3 + 1 + 0 + 220 + 30 + 200 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 5897504320 + ... + 5897507919.

Almost surely, 2^{21231022030200} is an apocalyptic number.

21231022030200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21231022030200 is an abundant number, since it is smaller than the sum of its proper divisors (50069826960600).

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

21231022030200 is a wasteful number, since it uses less digits than its factorization.

21231022030200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11795012261 (or 11795012249 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 21231022030200 its reverse (203022013212), we get a palindrome (21434044043412).

The spelling of 21231022030200 in words is "twenty-one trillion, two hundred thirty-one billion, twenty-two million, thirty thousand, two hundred".