121301669 has 2 divisors, whose sum is σ = 121301670. Its totient is φ = 121301668.

The previous prime is 121301641. The next prime is 121301671. The reversal of 121301669 is 966103121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115240225 + 6061444 = 10735^2 + 2462^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121301669 is a prime.

It is a super-2 number, since 2×121301669² = 29428189804371122, which contains 22 as substring.

Together with 121301671, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121301969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60650834 + 60650835.

It is an arithmetic number, because the mean of its divisors is an integer number (60650835).

Almost surely, 2^121301669 is an apocalyptic number.

It is an amenable number.

121301669 is a deficient number, since it is larger than the sum of its proper divisors (1).

121301669 is an equidigital number, since it uses as much as digits as its factorization.

121301669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 121301669 is about 11013.7036913111. The cubic root of 121301669 is about 495.0194448709.

The spelling of 121301669 in words is "one hundred twenty-one million, three hundred one thousand, six hundred sixty-nine".