21122033200 has 30 divisors (see below), whose sum is σ = 50745685724. Its totient is φ = 8448813120.

The previous prime is 21122033171. The next prime is 21122033203. The reversal of 21122033200 is 233022112.

It is a super-2 number, since 2×21122033200² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (21122033203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 26402142 + ... + 26402941.

Almost surely, 2^21122033200 is an apocalyptic number.

21122033200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21122033200 is an abundant number, since it is smaller than the sum of its proper divisors (29623652524).

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

21122033200 is a wasteful number, since it uses less digits than its factorization.

21122033200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52805101 (or 52805090 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 21122033200 its reverse (233022112), we get a palindrome (21355055312).

The spelling of 21122033200 in words is "twenty-one billion, one hundred twenty-two million, thirty-three thousand, two hundred".