121470247 has 2 divisors, whose sum is σ = 121470248. Its totient is φ = 121470246.

The previous prime is 121470233. The next prime is 121470257. The reversal of 121470247 is 742074121.

It is a strong prime.

It is an emirp because it is prime and its reverse (742074121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121470247 - 2⁷ = 121470119 is a prime.

It is equal to p_6920614 and since 121470247 and 6920614 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121470257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60735123 + 60735124.

It is an arithmetic number, because the mean of its divisors is an integer number (60735124).

Almost surely, 2^121470247 is an apocalyptic number.

121470247 is a deficient number, since it is larger than the sum of its proper divisors (1).

121470247 is an equidigital number, since it uses as much as digits as its factorization.

121470247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3136, while the sum is 28.

The square root of 121470247 is about 11021.3541364027. The cubic root of 121470247 is about 495.2486551277.

The spelling of 121470247 in words is "one hundred twenty-one million, four hundred seventy thousand, two hundred forty-seven".