1121111220137 has 2 divisors, whose sum is σ = 1121111220138. Its totient is φ = 1121111220136.

The previous prime is 1121111220071. The next prime is 1121111220169. The reversal of 1121111220137 is 7310221111211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1045422406681 + 75688813456 = 1022459^2 + 275116^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121111220137 - 2⁸ = 1121111219881 is a prime.

It is not a weakly prime, because it can be changed into another prime (1121111220037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560555610068 + 560555610069.

It is an arithmetic number, because the mean of its divisors is an integer number (560555610069).

Almost surely, 2^{1121111220137} is an apocalyptic number.

It is an amenable number.

1121111220137 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121111220137 is an equidigital number, since it uses as much as digits as its factorization.

1121111220137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168, while the sum is 23.

Adding to 1121111220137 its reverse (7310221111211), we get a palindrome (8431332331348).

The spelling of 1121111220137 in words is "one trillion, one hundred twenty-one billion, one hundred eleven million, two hundred twenty thousand, one hundred thirty-seven".