111220313321137 has 2 divisors, whose sum is σ = 111220313321138. Its totient is φ = 111220313321136.

The previous prime is 111220313321053. The next prime is 111220313321171. The reversal of 111220313321137 is 731123313022111.

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., 110915251520161 + 305061800976 = 10531631^2 + 552324^2 .

It is a cyclic number.

It is not a de Polignac number, because 111220313321137 - 2³⁹ = 110670557507249 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111220313321099 and 111220313321108.

It is not a weakly prime, because it can be changed into another prime (111220313321177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55610156660568 + 55610156660569.

It is an arithmetic number, because the mean of its divisors is an integer number (55610156660569).

Almost surely, 2^{111220313321137} is an apocalyptic number.

It is an amenable number.

111220313321137 is a deficient number, since it is larger than the sum of its proper divisors (1).

111220313321137 is an equidigital number, since it uses as much as digits as its factorization.

111220313321137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 31.

Adding to 111220313321137 its reverse (731123313022111), we get a palindrome (842343626343248).

The spelling of 111220313321137 in words is "one hundred eleven trillion, two hundred twenty billion, three hundred thirteen million, three hundred twenty-one thousand, one hundred thirty-seven".