111220012220137 has 2 divisors, whose sum is σ = 111220012220138. Its totient is φ = 111220012220136.

The previous prime is 111220012220087. The next prime is 111220012220159. The reversal of 111220012220137 is 731022210022111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 94878723406041 + 16341288814096 = 9740571^2 + 4042436^2 .

It is a cyclic number.

It is not a de Polignac number, because 111220012220137 - 2¹¹ = 111220012218089 is a prime.

It is a super-2 number, since 2×111220012220137² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (111220012224137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55610006110068 + 55610006110069.

It is an arithmetic number, because the mean of its divisors is an integer number (55610006110069).

Almost surely, 2^{111220012220137} is an apocalyptic number.

It is an amenable number.

111220012220137 is a deficient number, since it is larger than the sum of its proper divisors (1).

111220012220137 is an equidigital number, since it uses as much as digits as its factorization.

111220012220137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 25.

Adding to 111220012220137 its reverse (731022210022111), we get a palindrome (842242222242248).

The spelling of 111220012220137 in words is "one hundred eleven trillion, two hundred twenty billion, twelve million, two hundred twenty thousand, one hundred thirty-seven".