121251419 has 2 divisors, whose sum is σ = 121251420. Its totient is φ = 121251418.

The previous prime is 121251359. The next prime is 121251451. The reversal of 121251419 is 914152121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121251419 is a prime.

It is a super-2 number, since 2×121251419² = 29403813219027122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (121251619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60625709 + 60625710.

It is an arithmetic number, because the mean of its divisors is an integer number (60625710).

Almost surely, 2^121251419 is an apocalyptic number.

121251419 is a deficient number, since it is larger than the sum of its proper divisors (1).

121251419 is an equidigital number, since it uses as much as digits as its factorization.

121251419 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 720, while the sum is 26.

The square root of 121251419 is about 11011.4222060549. The cubic root of 121251419 is about 494.9510804290.

The spelling of 121251419 in words is "one hundred twenty-one million, two hundred fifty-one thousand, four hundred nineteen".