21022013320000 has 840 divisors, whose sum is σ = 66528821687328. Its totient is φ = 6514905600000.

The previous prime is 21022013319949. The next prime is 21022013320019. The reversal of 21022013320000 is 2331022012.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

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, 3902357307 + ... + 3902362693.

Almost surely, 2^{21022013320000} is an apocalyptic number.

21022013320000 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 21022013320000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33264410843664).

21022013320000 is an abundant number, since it is smaller than the sum of its proper divisors (45506808367328).

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

21022013320000 is a wasteful number, since it uses less digits than its factorization.

21022013320000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5625 (or 5593 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 21022013320000 its reverse (2331022012), we get a palindrome (21024344342012).

The spelling of 21022013320000 in words is "twenty-one trillion, twenty-two billion, thirteen million, three hundred twenty thousand".