121167996637 has 2 divisors, whose sum is σ = 121167996638. Its totient is φ = 121167996636.

The previous prime is 121167996617. The next prime is 121167996671. The reversal of 121167996637 is 736699761121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80682130116 + 40485866521 = 284046^2 + 201211^2 .

It is an emirp because it is prime and its reverse (736699761121) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121167996637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121167996617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60583998318 + 60583998319.

It is an arithmetic number, because the mean of its divisors is an integer number (60583998319).

Almost surely, 2^121167996637 is an apocalyptic number.

It is an amenable number.

121167996637 is a deficient number, since it is larger than the sum of its proper divisors (1).

121167996637 is an equidigital number, since it uses as much as digits as its factorization.

121167996637 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5143824, while the sum is 58.

The spelling of 121167996637 in words is "one hundred twenty-one billion, one hundred sixty-seven million, nine hundred ninety-six thousand, six hundred thirty-seven".