22121102212213 has 4 divisors (see below), whose sum is σ = 22121201525248. Its totient is φ = 22121002899180.

The previous prime is 22121102212193. The next prime is 22121102212249. The reversal of 22121102212213 is 31221220112122.

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 not a de Polignac number, because 22121102212213 - 2⁹ = 22121102211701 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 (22121102219213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49321653 + ... + 49768138.

It is an arithmetic number, because the mean of its divisors is an integer number (5530300381312).

Almost surely, 2^{22121102212213} is an apocalyptic number.

It is an amenable number.

22121102212213 is a deficient number, since it is larger than the sum of its proper divisors (99313035).

22121102212213 is an equidigital number, since it uses as much as digits as its factorization.

22121102212213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99313034.

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 22121102212213 its reverse (31221220112122), we get a palindrome (53342322324335).

The spelling of 22121102212213 in words is "twenty-two trillion, one hundred twenty-one billion, one hundred two million, two hundred twelve thousand, two hundred thirteen".