21000023333000 has 32 divisors (see below), whose sum is σ = 49140054601560. Its totient is φ = 8400009332800.

The previous prime is 21000023332987. The next prime is 21000023333021. The reversal of 21000023333000 is 33332000012.

It can be written as a sum of positive squares in 4 ways, for example, as 3630450079876 + 17369573253124 = 1905374^2 + 4167682^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 21000023333000.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10500010667 + ... + 10500012666.

Almost surely, 2^{21000023333000} is an apocalyptic number.

21000023333000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21000023333000 is an abundant number, since it is smaller than the sum of its proper divisors (28140031268560).

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

21000023333000 is a wasteful number, since it uses less digits than its factorization.

21000023333000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21000023354 (or 21000023340 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 17.

Adding to 21000023333000 its reverse (33332000012), we get a palindrome (21033355333012).

The spelling of 21000023333000 in words is "twenty-one trillion, twenty-three million, three hundred thirty-three thousand".