121700731 has 2 divisors, whose sum is σ = 121700732. Its totient is φ = 121700730.

The previous prime is 121700717. The next prime is 121700741. The reversal of 121700731 is 137007121.

It is a strong prime.

It is an emirp because it is prime and its reverse (137007121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121700731 - 2⁹ = 121700219 is a prime.

It is a super-2 number, since 2×121700731² = 29622135851868722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121700701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60850365 + 60850366.

It is an arithmetic number, because the mean of its divisors is an integer number (60850366).

Almost surely, 2^121700731 is an apocalyptic number.

121700731 is a deficient number, since it is larger than the sum of its proper divisors (1).

121700731 is an equidigital number, since it uses as much as digits as its factorization.

121700731 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 294, while the sum is 22.

The square root of 121700731 is about 11031.8054279433. The cubic root of 121700731 is about 495.5616941195.

Adding to 121700731 its reverse (137007121), we get a palindrome (258707852).

The spelling of 121700731 in words is "one hundred twenty-one million, seven hundred thousand, seven hundred thirty-one".