121886477 has 2 divisors, whose sum is σ = 121886478. Its totient is φ = 121886476.

The previous prime is 121886411. The next prime is 121886483. The reversal of 121886477 is 774688121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76983076 + 44903401 = 8774^2 + 6701^2 .

It is a cyclic number.

It is not a de Polignac number, because 121886477 - 2⁸ = 121886221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121886777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60943238 + 60943239.

It is an arithmetic number, because the mean of its divisors is an integer number (60943239).

Almost surely, 2^121886477 is an apocalyptic number.

It is an amenable number.

121886477 is a deficient number, since it is larger than the sum of its proper divisors (1).

121886477 is an equidigital number, since it uses as much as digits as its factorization.

121886477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 150528, while the sum is 44.

The square root of 121886477 is about 11040.2208764137. The cubic root of 121886477 is about 495.8136833271.

The spelling of 121886477 in words is "one hundred twenty-one million, eight hundred eighty-six thousand, four hundred seventy-seven".