121136651 has 2 divisors, whose sum is σ = 121136652. Its totient is φ = 121136650.

The previous prime is 121136621. The next prime is 121136657. The reversal of 121136651 is 156631121.

It is a strong prime.

It is an emirp because it is prime and its reverse (156631121) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121136651 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121136651.

It is not a weakly prime, because it can be changed into another prime (121136657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60568325 + 60568326.

It is an arithmetic number, because the mean of its divisors is an integer number (60568326).

Almost surely, 2^121136651 is an apocalyptic number.

121136651 is a deficient number, since it is larger than the sum of its proper divisors (1).

121136651 is an equidigital number, since it uses as much as digits as its factorization.

121136651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1080, while the sum is 26.

The square root of 121136651 is about 11006.2096563713. The cubic root of 121136651 is about 494.7948692608.

Adding to 121136651 its reverse (156631121), we get a palindrome (277767772).

The spelling of 121136651 in words is "one hundred twenty-one million, one hundred thirty-six thousand, six hundred fifty-one".