121112634157 has 2 divisors, whose sum is σ = 121112634158. Its totient is φ = 121112634156.

The previous prime is 121112634133. The next prime is 121112634187. The reversal of 121112634157 is 751436211121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118377971721 + 2734662436 = 344061^2 + 52294^2 .

It is a cyclic number.

It is not a de Polignac number, because 121112634157 - 2⁷ = 121112634029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121112634107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60556317078 + 60556317079.

It is an arithmetic number, because the mean of its divisors is an integer number (60556317079).

Almost surely, 2^121112634157 is an apocalyptic number.

It is an amenable number.

121112634157 is a deficient number, since it is larger than the sum of its proper divisors (1).

121112634157 is an equidigital number, since it uses as much as digits as its factorization.

121112634157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 34.

Adding to 121112634157 its reverse (751436211121), we get a palindrome (872548845278).

The spelling of 121112634157 in words is "one hundred twenty-one billion, one hundred twelve million, six hundred thirty-four thousand, one hundred fifty-seven".