121673477 has 2 divisors, whose sum is σ = 121673478. Its totient is φ = 121673476.

The previous prime is 121673443. The next prime is 121673479. The reversal of 121673477 is 774376121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 101324356 + 20349121 = 10066^2 + 4511^2 .

It is a cyclic number.

It is not a de Polignac number, because 121673477 - 2¹⁸ = 121411333 is a prime.

Together with 121673479, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121673477.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121673479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60836738 + 60836739.

It is an arithmetic number, because the mean of its divisors is an integer number (60836739).

Almost surely, 2^121673477 is an apocalyptic number.

It is an amenable number.

121673477 is a deficient number, since it is larger than the sum of its proper divisors (1).

121673477 is an equidigital number, since it uses as much as digits as its factorization.

121673477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 49392, while the sum is 38.

The square root of 121673477 is about 11030.5701121928. The cubic root of 121673477 is about 495.5246988699.

The spelling of 121673477 in words is "one hundred twenty-one million, six hundred seventy-three thousand, four hundred seventy-seven".