21202223123330 has 16 divisors (see below), whose sum is σ = 40408942894200. Its totient is φ = 7982013411072.

The previous prime is 21202223123329. The next prime is 21202223123357. The reversal of 21202223123330 is 3332132220212.

It can be written as a sum of positive squares in 4 ways, for example, as 20202301121809 + 999922001521 = 4494697^2 + 999961^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 21202223123330.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62359479605 + ... + 62359479944.

Almost surely, 2^{21202223123330} is an apocalyptic number.

21202223123330 is a deficient number, since it is larger than the sum of its proper divisors (19206719770870).

21202223123330 is a wasteful number, since it uses less digits than its factorization.

21202223123330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124718959573.

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 21202223123330 its reverse (3332132220212), we get a palindrome (24534355343542).

The spelling of 21202223123330 in words is "twenty-one trillion, two hundred two billion, two hundred twenty-three million, one hundred twenty-three thousand, three hundred thirty".