21102220330030 has 96 divisors (see below), whose sum is σ = 44622686590272. Its totient is φ = 7038330624000.

The previous prime is 21102220330021. The next prime is 21102220330031. The reversal of 21102220330030 is 3003302220112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21102220330031) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 722639430 + ... + 722668630.

It is an arithmetic number, because the mean of its divisors is an integer number (464819651982).

Almost surely, 2^{21102220330030} is an apocalyptic number.

21102220330030 is an abundant number, since it is smaller than the sum of its proper divisors (23520466260242).

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

21102220330030 is a wasteful number, since it uses less digits than its factorization.

21102220330030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36830 (or 36793 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 21102220330030 its reverse (3003302220112), we get a palindrome (24105522550142).

The spelling of 21102220330030 in words is "twenty-one trillion, one hundred two billion, two hundred twenty million, three hundred thirty thousand, thirty".