21332623312 has 240 divisors, whose sum is σ = 58867204480. Its totient is φ = 7267138560.

The previous prime is 21332623297. The next prime is 21332623379.

21332623312 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3344158 + ... + 3350530.

Almost surely, 2^21332623312 is an apocalyptic number.

21332623312 is a gapful number since it is divisible by the number (22) 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 21332623312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29433602240).

21332623312 is an abundant number, since it is smaller than the sum of its proper divisors (37534581168).

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

21332623312 is a wasteful number, since it uses less digits than its factorization.

21332623312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6442 (or 6425 counting only the distinct ones).

The product of its digits is 7776, while the sum is 28.

The spelling of 21332623312 in words is "twenty-one billion, three hundred thirty-two million, six hundred twenty-three thousand, three hundred twelve".