22131113 has 2 divisors, whose sum is σ = 22131114. Its totient is φ = 22131112.

The previous prime is 22131101. The next prime is 22131133. The reversal of 22131113 is 31113122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18774889 + 3356224 = 4333^2 + 1832^2 .

It is a cyclic number.

It is not a de Polignac number, because 22131113 - 2⁴ = 22131097 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22131133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11065556 + 11065557.

It is an arithmetic number, because the mean of its divisors is an integer number (11065557).

Almost surely, 2^22131113 is an apocalyptic number.

It is an amenable number.

22131113 is a deficient number, since it is larger than the sum of its proper divisors (1).

22131113 is an equidigital number, since it uses as much as digits as its factorization.

22131113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36, while the sum is 14.

The square root of 22131113 is about 4704.3716902473. The cubic root of 22131113 is about 280.7594730041.

Adding to 22131113 its reverse (31113122), we get a palindrome (53244235).

Subtracting 22131113 from its reverse (31113122), we obtain a square (8982009 = 2997²).

The spelling of 22131113 in words is "twenty-two million, one hundred thirty-one thousand, one hundred thirteen".