21133210000 has 600 divisors, whose sum is σ = 65578883040. Its totient is φ = 6547968000.

The previous prime is 21133209997. The next prime is 21133210013. The reversal of 21133210000 is 1233112.

It is a super-2 number, since 2×21133210000² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 358189971 + ... + 358190029.

Almost surely, 2^21133210000 is an apocalyptic number.

21133210000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21133210000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32789441520).

21133210000 is an abundant number, since it is smaller than the sum of its proper divisors (44445673040).

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

21133210000 is a wasteful number, since it uses less digits than its factorization.

21133210000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161 (or 133 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 21133210000 its reverse (1233112), we get a palindrome (21134443112).

The spelling of 21133210000 in words is "twenty-one billion, one hundred thirty-three million, two hundred ten thousand".