21202132320030 has 64 divisors (see below), whose sum is σ = 51330868515648. Its totient is φ = 5604545157120.

The previous prime is 21202132319939. The next prime is 21202132320043. The reversal of 21202132320030 is 3002323120212.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21202132319979 and 21202132320006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3363307 + ... + 7329126.

It is an arithmetic number, because the mean of its divisors is an integer number (802044820557).

Almost surely, 2^{21202132320030} is an apocalyptic number.

21202132320030 is an abundant number, since it is smaller than the sum of its proper divisors (30128736195618).

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

21202132320030 is a wasteful number, since it uses less digits than its factorization.

21202132320030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10693021.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 21202132320030 its reverse (3002323120212), we get a palindrome (24204455440242).

The spelling of 21202132320030 in words is "twenty-one trillion, two hundred two billion, one hundred thirty-two million, three hundred twenty thousand, thirty".