22212211202213 has 4 divisors (see below), whose sum is σ = 22271761366668. Its totient is φ = 22152661037760.

The previous prime is 22212211202189. The next prime is 22212211202261. The reversal of 22212211202213 is 31220211221222.

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 13950277290049 + 8261933912164 = 3735007^2 + 2874358^2 .

It is a cyclic number.

It is not a de Polignac number, because 22212211202213 - 2³⁰ = 22211137460389 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 (22212211202513) 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, 29775081668 + ... + 29775082413.

It is an arithmetic number, because the mean of its divisors is an integer number (5567940341667).

Almost surely, 2^{22212211202213} is an apocalyptic number.

It is an amenable number.

22212211202213 is a deficient number, since it is larger than the sum of its proper divisors (59550164455).

22212211202213 is an equidigital number, since it uses as much as digits as its factorization.

22212211202213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59550164454.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 22212211202213 its reverse (31220211221222), we get a palindrome (53432422423435).

The spelling of 22212211202213 in words is "twenty-two trillion, two hundred twelve billion, two hundred eleven million, two hundred two thousand, two hundred thirteen".