121444219 has 8 divisors (see below), whose sum is σ = 137669840. Its totient is φ = 106202016.

The previous prime is 121444207. The next prime is 121444241. The reversal of 121444219 is 912444121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121444219 - 2¹¹ = 121442171 is a prime.

It is a super-2 number, since 2×121444219² = 29497396657039922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121444259) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 245592 + ... + 246085.

It is an arithmetic number, because the mean of its divisors is an integer number (17208730).

Almost surely, 2^121444219 is an apocalyptic number.

121444219 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

121444219 is the 6363-rd hex number.

121444219 is a deficient number, since it is larger than the sum of its proper divisors (16225621).

121444219 is a wasteful number, since it uses less digits than its factorization.

121444219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491709.

The product of its digits is 2304, while the sum is 28.

The square root of 121444219 is about 11020.1732744998. The cubic root of 121444219 is about 495.2132795162.

It can be divided in two parts, 1214442 and 19, that added together give a triangular number (1214461 = T₁₅₅₈).

The spelling of 121444219 in words is "one hundred twenty-one million, four hundred forty-four thousand, two hundred nineteen".