21133222021200 has 120 divisors (see below), whose sum is σ = 67705969566400. Its totient is φ = 5634758753280.

The previous prime is 21133222021129. The next prime is 21133222021201. The reversal of 21133222021200 is 212022233112.

It is a tau number, because it is divible by the number of its divisors (120).

It is a super-2 number, since 2×21133222021200² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21133222021201) 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 23 ways as a sum of consecutive naturals, for example, 7647861 + ... + 10037739.

Almost surely, 2^{21133222021200} is an apocalyptic number.

21133222021200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21133222021200 is an abundant number, since it is smaller than the sum of its proper divisors (46572747545200).

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

21133222021200 is a wasteful number, since it uses less digits than its factorization.

21133222021200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2397269 (or 2397258 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 21133222021200 its reverse (212022233112), we get a palindrome (21345244254312).

The spelling of 21133222021200 in words is "twenty-one trillion, one hundred thirty-three billion, two hundred twenty-two million, twenty-one thousand, two hundred".