21333022000 has 160 divisors (see below), whose sum is σ = 53569571328. Its totient is φ = 8208000000.

The previous prime is 21333021967. The next prime is 21333022001. The reversal of 21333022000 is 22033312.

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 (21333022001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11221050 + ... + 11222950.

Almost surely, 2^21333022000 is an apocalyptic number.

21333022000 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 21333022000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26784785664).

21333022000 is an abundant number, since it is smaller than the sum of its proper divisors (32236549328).

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

21333022000 is a wasteful number, since it uses less digits than its factorization.

21333022000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2136 (or 2120 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 16.

Adding to 21333022000 its reverse (22033312), we get a palindrome (21355055312).

The spelling of 21333022000 in words is "twenty-one billion, three hundred thirty-three million, twenty-two thousand".