121441619 has 4 divisors (see below), whose sum is σ = 130783296. Its totient is φ = 112099944.

The previous prime is 121441613. The next prime is 121441627. The reversal of 121441619 is 916144121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 916144121 = 239 ⋅3833239.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121441619 is a prime.

It is a super-2 number, since 2×121441619² = 29496133650682322, 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 = 121441591 and 121441600.

It is not an unprimeable number, because it can be changed into a prime (121441613) 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, 4670819 + ... + 4670844.

It is an arithmetic number, because the mean of its divisors is an integer number (32695824).

Almost surely, 2^121441619 is an apocalyptic number.

121441619 is a deficient number, since it is larger than the sum of its proper divisors (9341677).

121441619 is an equidigital number, since it uses as much as digits as its factorization.

121441619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9341676.

The product of its digits is 1728, while the sum is 29.

The square root of 121441619 is about 11020.0553083912. The cubic root of 121441619 is about 495.2097454830.

The spelling of 121441619 in words is "one hundred twenty-one million, four hundred forty-one thousand, six hundred nineteen".