121696357 has 2 divisors, whose sum is σ = 121696358. Its totient is φ = 121696356.

The previous prime is 121696339. The next prime is 121696361. The reversal of 121696357 is 753696121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 104837121 + 16859236 = 10239^2 + 4106^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121696357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121690357) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60848178 + 60848179.

It is an arithmetic number, because the mean of its divisors is an integer number (60848179).

Almost surely, 2^121696357 is an apocalyptic number.

It is an amenable number.

121696357 is a deficient number, since it is larger than the sum of its proper divisors (1).

121696357 is an equidigital number, since it uses as much as digits as its factorization.

121696357 is an evil number, because the sum of its binary digits is even.

The product of its digits is 68040, while the sum is 40.

The square root of 121696357 is about 11031.6071811862. The cubic root of 121696357 is about 495.5557571165. Note that the first 3 decimals are identical.

The spelling of 121696357 in words is "one hundred twenty-one million, six hundred ninety-six thousand, three hundred fifty-seven".