21101032320000 has 220 divisors, whose sum is σ = 70279939889016. Its totient is φ = 5626941440000.

The previous prime is 21101032319977. The next prime is 21101032320019. The reversal of 21101032320000 is 2323010112.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3575061 + ... + 7415060.

Almost surely, 2^{21101032320000} is an apocalyptic number.

21101032320000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21101032320000 is an abundant number, since it is smaller than the sum of its proper divisors (49178907569016).

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

21101032320000 is an equidigital number, since it uses as much as digits as its factorization.

21101032320000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10990164 (or 10990131 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 21101032320000 its reverse (2323010112), we get a palindrome (21103355330112).

The spelling of 21101032320000 in words is "twenty-one trillion, one hundred one billion, thirty-two million, three hundred twenty thousand".