121254563 has 2 divisors, whose sum is σ = 121254564. Its totient is φ = 121254562.

The previous prime is 121254541. The next prime is 121254577. The reversal of 121254563 is 365452121.

It is a strong prime.

It is an emirp because it is prime and its reverse (365452121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121254563 - 2²² = 117060259 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (121254503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60627281 + 60627282.

It is an arithmetic number, because the mean of its divisors is an integer number (60627282).

Almost surely, 2^121254563 is an apocalyptic number.

121254563 is a deficient number, since it is larger than the sum of its proper divisors (1).

121254563 is an equidigital number, since it uses as much as digits as its factorization.

121254563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7200, while the sum is 29.

The square root of 121254563 is about 11011.5649659801. The cubic root of 121254563 is about 494.9553583521.

The spelling of 121254563 in words is "one hundred twenty-one million, two hundred fifty-four thousand, five hundred sixty-three".