21000033200000 has 96 divisors (see below), whose sum is σ = 52291658666520. Its totient is φ = 8400013120000.

The previous prime is 21000033199993. The next prime is 21000033200021. The reversal of 21000033200000 is 233000012.

It is a super-2 number, since 2×21000033200000² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

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, 25850042 + ... + 26650041.

Almost surely, 2^{21000033200000} is an apocalyptic number.

21000033200000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21000033200000 is an abundant number, since it is smaller than the sum of its proper divisors (31291625466520).

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

21000033200000 is an frugal number, since it uses more digits than its factorization.

21000033200000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52500122 (or 52500090 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 11.

Adding to 21000033200000 its reverse (233000012), we get a palindrome (21000266200012).

The spelling of 21000033200000 in words is "twenty-one trillion, thirty-three million, two hundred thousand".