22221111137 has 2 divisors, whose sum is σ = 22221111138. Its totient is φ = 22221111136.

The previous prime is 22221111103. The next prime is 22221111169. The reversal of 22221111137 is 73111112222.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11715681121 + 10505430016 = 108239^2 + 102496^2 .

It is a cyclic number.

It is not a de Polignac number, because 22221111137 - 2⁸ = 22221110881 is a prime.

It is not a weakly prime, because it can be changed into another prime (22221117137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11110555568 + 11110555569.

It is an arithmetic number, because the mean of its divisors is an integer number (11110555569).

Almost surely, 2^22221111137 is an apocalyptic number.

It is an amenable number.

22221111137 is a deficient number, since it is larger than the sum of its proper divisors (1).

22221111137 is an equidigital number, since it uses as much as digits as its factorization.

22221111137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 336, while the sum is 23.

Adding to 22221111137 its reverse (73111112222), we get a palindrome (95332223359).

The spelling of 22221111137 in words is "twenty-two billion, two hundred twenty-one million, one hundred eleven thousand, one hundred thirty-seven".