21020112222200 has 192 divisors, whose sum is σ = 62090179307520. Its totient is φ = 6437921472000.

The previous prime is 21020112222167. The next prime is 21020112222211. The reversal of 21020112222200 is 222221102012.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18064046 + ... + 19192445.

It is an arithmetic number, because the mean of its divisors is an integer number (323386350560).

Almost surely, 2^{21020112222200} is an apocalyptic number.

21020112222200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21020112222200 is an abundant number, since it is smaller than the sum of its proper divisors (41070067085320).

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

21020112222200 is a wasteful number, since it uses less digits than its factorization.

21020112222200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37256558 (or 37256549 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 21020112222200 its reverse (222221102012), we get a palindrome (21242333324212).

The spelling of 21020112222200 in words is "twenty-one trillion, twenty billion, one hundred twelve million, two hundred twenty-two thousand, two hundred".