121078319 has 4 divisors (see below), whose sum is σ = 124350744. Its totient is φ = 117805896.

The previous prime is 121078303. The next prime is 121078327. The reversal of 121078319 is 913870121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 913870121 = 751 ⋅1216871.

It is a cyclic number.

It is not a de Polignac number, because 121078319 - 2⁴ = 121078303 is a prime.

It is a super-2 number, since 2×121078319² = 29319918663731522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121078339) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1636157 + ... + 1636230.

It is an arithmetic number, because the mean of its divisors is an integer number (31087686).

Almost surely, 2^121078319 is an apocalyptic number.

121078319 is a deficient number, since it is larger than the sum of its proper divisors (3272425).

121078319 is an equidigital number, since it uses as much as digits as its factorization.

121078319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3272424.

The product of its (nonzero) digits is 3024, while the sum is 32.

The square root of 121078319 is about 11003.5593786738. The cubic root of 121078319 is about 494.7154355301.

The spelling of 121078319 in words is "one hundred twenty-one million, seventy-eight thousand, three hundred nineteen".