22111222213 has 2 divisors, whose sum is σ = 22111222214. Its totient is φ = 22111222212.

The previous prime is 22111222187. The next prime is 22111222219. The reversal of 22111222213 is 31222211122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14472811809 + 7638410404 = 120303^2 + 87398^2 .

It is a cyclic number.

It is not a de Polignac number, because 22111222213 - 2⁵ = 22111222181 is a prime.

It is a super-2 number, since 2×22111222213² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22111222219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11055611106 + 11055611107.

It is an arithmetic number, because the mean of its divisors is an integer number (11055611107).

Almost surely, 2^22111222213 is an apocalyptic number.

It is an amenable number.

22111222213 is a deficient number, since it is larger than the sum of its proper divisors (1).

22111222213 is an equidigital number, since it uses as much as digits as its factorization.

22111222213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 192, while the sum is 19.

Adding to 22111222213 its reverse (31222211122), we get a palindrome (53333433335).

The spelling of 22111222213 in words is "twenty-two billion, one hundred eleven million, two hundred twenty-two thousand, two hundred thirteen".