121216874 has 8 divisors (see below), whose sum is σ = 182983908. Its totient is φ = 60222240.

The previous prime is 121216873. The next prime is 121216933. The reversal of 121216874 is 478612121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 113571649 + 7645225 = 10657^2 + 2765^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 121216874.

It is not an unprimeable number, because it can be changed into a prime (121216873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 192707 + ... + 193334.

Almost surely, 2^121216874 is an apocalyptic number.

121216874 is a deficient number, since it is larger than the sum of its proper divisors (61767034).

121216874 is a wasteful number, since it uses less digits than its factorization.

121216874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386200.

The product of its digits is 5376, while the sum is 32.

The square root of 121216874 is about 11009.8534958463. The cubic root of 121216874 is about 494.9040714696.

Adding to 121216874 its reverse (478612121), we get a palindrome (599828995).

The spelling of 121216874 in words is "one hundred twenty-one million, two hundred sixteen thousand, eight hundred seventy-four".