21333418092 has 336 divisors, whose sum is σ = 65947947520. Its totient is φ = 5910568704.

The previous prime is 21333418081. The next prime is 21333418097. The reversal of 21333418092 is 29081433312.

It is a super-2 number, since 2×21333418092² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21333418097) by changing a digit.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 153477759 + ... + 153477897.

Almost surely, 2^21333418092 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21333418092, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32973973760).

21333418092 is an abundant number, since it is smaller than the sum of its proper divisors (44614529428).

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

21333418092 is a wasteful number, since it uses less digits than its factorization.

21333418092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344 (or 327 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The spelling of 21333418092 in words is "twenty-one billion, three hundred thirty-three million, four hundred eighteen thousand, ninety-two".