21202110220000 has 60 divisors (see below), whose sum is σ = 52160371506936. Its totient is φ = 8480844080000.

The previous prime is 21202110219937. The next prime is 21202110220003. The reversal of 21202110220000 is 2201120212.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21202110220003) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 530032756 + ... + 530072755.

Almost surely, 2^{21202110220000} is an apocalyptic number.

21202110220000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21202110220000 is an abundant number, since it is smaller than the sum of its proper divisors (30958261286936).

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

21202110220000 is an equidigital number, since it uses as much as digits as its factorization.

21202110220000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1060105541 (or 1060105518 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 21202110220000 its reverse (2201120212), we get a palindrome (21204311340212).

The spelling of 21202110220000 in words is "twenty-one trillion, two hundred two billion, one hundred ten million, two hundred twenty thousand".