121225099 has 2 divisors, whose sum is σ = 121225100. Its totient is φ = 121225098.

The previous prime is 121225081. The next prime is 121225121. The reversal of 121225099 is 990522121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121225099 - 2⁵ = 121225067 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121225099.

It is not a weakly prime, because it can be changed into another prime (121225009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60612549 + 60612550.

It is an arithmetic number, because the mean of its divisors is an integer number (60612550).

Almost surely, 2^121225099 is an apocalyptic number.

121225099 is a deficient number, since it is larger than the sum of its proper divisors (1).

121225099 is an equidigital number, since it uses as much as digits as its factorization.

121225099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 121225099 is about 11010.2270185496. The cubic root of 121225099 is about 494.9152648890.

The spelling of 121225099 in words is "one hundred twenty-one million, two hundred twenty-five thousand, ninety-nine".