118221419 has 4 divisors (see below), whose sum is σ = 118247496. Its totient is φ = 118195344.

The previous prime is 118221407. The next prime is 118221457. The reversal of 118221419 is 914122811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 914122811 = 7 ⋅130588973.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-118221419 is a prime.

It is a super-2 number, since 2×118221419² = 27952607820747122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 118221391 and 118221400.

It is not an unprimeable number, because it can be changed into a prime (118221619) 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, 4274 + ... + 15959.

It is an arithmetic number, because the mean of its divisors is an integer number (29561874).

Almost surely, 2^118221419 is an apocalyptic number.

118221419 is a deficient number, since it is larger than the sum of its proper divisors (26077).

118221419 is an equidigital number, since it uses as much as digits as its factorization.

118221419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26076.

The product of its digits is 1152, while the sum is 29.

The square root of 118221419 is about 10872.9673502683. The cubic root of 118221419 is about 490.7934098801.

The spelling of 118221419 in words is "one hundred eighteen million, two hundred twenty-one thousand, four hundred nineteen".