22120112021213 has 4 divisors (see below), whose sum is σ = 22482736808508. Its totient is φ = 21757487233920.

The previous prime is 22120112021209. The next prime is 22120112021221. The reversal of 22120112021213 is 31212021102122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5096879671129 + 17023232350084 = 2257627^2 + 4125922^2 .

It is a cyclic number.

It is not a de Polignac number, because 22120112021213 - 2² = 22120112021209 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 (22120112021263) 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, 181312393556 + ... + 181312393677.

It is an arithmetic number, because the mean of its divisors is an integer number (5620684202127).

Almost surely, 2^{22120112021213} is an apocalyptic number.

It is an amenable number.

22120112021213 is a deficient number, since it is larger than the sum of its proper divisors (362624787295).

22120112021213 is an equidigital number, since it uses as much as digits as its factorization.

22120112021213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362624787294.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 22120112021213 its reverse (31212021102122), we get a palindrome (53332133123335).

The spelling of 22120112021213 in words is "twenty-two trillion, one hundred twenty billion, one hundred twelve million, twenty-one thousand, two hundred thirteen".