121700507 has 2 divisors, whose sum is σ = 121700508. Its totient is φ = 121700506.

The previous prime is 121700419. The next prime is 121700533. The reversal of 121700507 is 705007121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121700507 - 2¹⁰ = 121699483 is a prime.

It is a super-2 number, since 2×121700507² = 29622026808114098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121700597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60850253 + 60850254.

It is an arithmetic number, because the mean of its divisors is an integer number (60850254).

Almost surely, 2^121700507 is an apocalyptic number.

121700507 is a deficient number, since it is larger than the sum of its proper divisors (1).

121700507 is an equidigital number, since it uses as much as digits as its factorization.

121700507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 490, while the sum is 23.

The square root of 121700507 is about 11031.7952754753. The cubic root of 121700507 is about 495.5613900789.

Adding to 121700507 its reverse (705007121), we get a palindrome (826707628).

The spelling of 121700507 in words is "one hundred twenty-one million, seven hundred thousand, five hundred seven".