22122121342213 has 4 divisors (see below), whose sum is σ = 22636589280448. Its totient is φ = 21607653403980.

The previous prime is 22122121342193. The next prime is 22122121342247. The reversal of 22122121342213 is 31224312122122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22122121342213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22122121349213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 257233969053 + ... + 257233969138.

It is an arithmetic number, because the mean of its divisors is an integer number (5659147320112).

Almost surely, 2^{22122121342213} is an apocalyptic number.

It is an amenable number.

22122121342213 is a deficient number, since it is larger than the sum of its proper divisors (514467938235).

22122121342213 is an equidigital number, since it uses as much as digits as its factorization.

22122121342213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514467938234.

The product of its digits is 4608, while the sum is 28.

Adding to 22122121342213 its reverse (31224312122122), we get a palindrome (53346433464335).

The spelling of 22122121342213 in words is "twenty-two trillion, one hundred twenty-two billion, one hundred twenty-one million, three hundred forty-two thousand, two hundred thirteen".