21202100222330 has 8 divisors (see below), whose sum is σ = 38163780400212. Its totient is φ = 8480840088928.

The previous prime is 21202100222309. The next prime is 21202100222363. The reversal of 21202100222330 is 3322200120212.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 20357449157929 + 844651064401 = 4511923^2 + 919049^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1060105011107 + ... + 1060105011126.

Almost surely, 2^{21202100222330} is an apocalyptic number.

21202100222330 is a deficient number, since it is larger than the sum of its proper divisors (16961680177882).

21202100222330 is a wasteful number, since it uses less digits than its factorization.

21202100222330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2120210022240.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 21202100222330 its reverse (3322200120212), we get a palindrome (24524300342542).

The spelling of 21202100222330 in words is "twenty-one trillion, two hundred two billion, one hundred million, two hundred twenty-two thousand, three hundred thirty".