21442332402000 has 480 divisors, whose sum is σ = 77991115677696. Its totient is φ = 5484519936000.

The previous prime is 21442332401983. The next prime is 21442332402059. The reversal of 21442332402000 is 20423324412.

21442332402000 is a `hidden beast` number, since 2 + 1 + 4 + 423 + 32 + 4 + 0 + 200 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 62883969 + ... + 63224031.

Almost surely, 2^{21442332402000} is an apocalyptic number.

21442332402000 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 21442332402000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38995557838848).

21442332402000 is an abundant number, since it is smaller than the sum of its proper divisors (56548783275696).

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

21442332402000 is a wasteful number, since it uses less digits than its factorization.

21442332402000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340236 (or 340217 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 21442332402000 its reverse (20423324412), we get a palindrome (21462755726412).

The spelling of 21442332402000 in words is "twenty-one trillion, four hundred forty-two billion, three hundred thirty-two million, four hundred two thousand".