121554127 has 2 divisors, whose sum is σ = 121554128. Its totient is φ = 121554126.

The previous prime is 121554107. The next prime is 121554133. The reversal of 121554127 is 721455121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121554127 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121554095 and 121554104.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121554107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60777063 + 60777064.

It is an arithmetic number, because the mean of its divisors is an integer number (60777064).

Almost surely, 2^121554127 is an apocalyptic number.

121554127 is a deficient number, since it is larger than the sum of its proper divisors (1).

121554127 is an equidigital number, since it uses as much as digits as its factorization.

121554127 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2800, while the sum is 28.

The square root of 121554127 is about 11025.1588197177. The cubic root of 121554127 is about 495.3626251461.

The spelling of 121554127 in words is "one hundred twenty-one million, five hundred fifty-four thousand, one hundred twenty-seven".