121116150517 has 2 divisors, whose sum is σ = 121116150518. Its totient is φ = 121116150516.

The previous prime is 121116150439. The next prime is 121116150581. The reversal of 121116150517 is 715051611121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71863669476 + 49252481041 = 268074^2 + 221929^2 .

It is an emirp because it is prime and its reverse (715051611121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121116150517 - 2¹¹ = 121116148469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121116154517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60558075258 + 60558075259.

It is an arithmetic number, because the mean of its divisors is an integer number (60558075259).

Almost surely, 2^121116150517 is an apocalyptic number.

It is an amenable number.

121116150517 is a deficient number, since it is larger than the sum of its proper divisors (1).

121116150517 is an equidigital number, since it uses as much as digits as its factorization.

121116150517 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2100, while the sum is 31.

Adding to 121116150517 its reverse (715051611121), we get a palindrome (836167761638).

The spelling of 121116150517 in words is "one hundred twenty-one billion, one hundred sixteen million, one hundred fifty thousand, five hundred seventeen".