22001133213 has 12 divisors (see below), whose sum is σ = 32379026940. Its totient is φ = 14390678016.

The previous prime is 22001133179. The next prime is 22001133227. The reversal of 22001133213 is 31233110022.

It can be written as a sum of positive squares in 2 ways, for example, as 12991896324 + 9009236889 = 113982^2 + 94917^2 .

It is not a de Polignac number, because 22001133213 - 2¹⁰ = 22001132189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22001133113) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23061508 + ... + 23062461.

It is an arithmetic number, because the mean of its divisors is an integer number (2698252245).

Almost surely, 2^22001133213 is an apocalyptic number.

It is an amenable number.

22001133213 is a deficient number, since it is larger than the sum of its proper divisors (10377893727).

22001133213 is a wasteful number, since it uses less digits than its factorization.

22001133213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46124028 (or 46124025 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 22001133213 its reverse (31233110022), we get a palindrome (53234243235).

The spelling of 22001133213 in words is "twenty-two billion, one million, one hundred thirty-three thousand, two hundred thirteen".