121107047 has 2 divisors, whose sum is σ = 121107048. Its totient is φ = 121107046.

The previous prime is 121107013. The next prime is 121107053. The reversal of 121107047 is 740701121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121107047 - 2¹⁰ = 121106023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121107247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60553523 + 60553524.

It is an arithmetic number, because the mean of its divisors is an integer number (60553524).

Almost surely, 2^121107047 is an apocalyptic number.

121107047 is a deficient number, since it is larger than the sum of its proper divisors (1).

121107047 is an equidigital number, since it uses as much as digits as its factorization.

121107047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 392, while the sum is 23.

The square root of 121107047 is about 11004.8646970329. The cubic root of 121107047 is about 494.7545591356.

Adding to 121107047 its reverse (740701121), we get a palindrome (861808168).

The spelling of 121107047 in words is "one hundred twenty-one million, one hundred seven thousand, forty-seven".