121612412 has 6 divisors (see below), whose sum is σ = 212821728. Its totient is φ = 60806204.

The previous prime is 121612397. The next prime is 121612487. The reversal of 121612412 is 214216121.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 15201548 + ... + 15201555.

It is an arithmetic number, because the mean of its divisors is an integer number (35470288).

Almost surely, 2^121612412 is an apocalyptic number.

It is an amenable number.

121612412 is a deficient number, since it is larger than the sum of its proper divisors (91209316).

121612412 is a wasteful number, since it uses less digits than its factorization.

121612412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30403107 (or 30403105 counting only the distinct ones).

The product of its digits is 192, while the sum is 20.

The square root of 121612412 is about 11027.8017755127. The cubic root of 121612412 is about 495.4417876773.

Adding to 121612412 its reverse (214216121), we get a palindrome (335828533).

The spelling of 121612412 in words is "one hundred twenty-one million, six hundred twelve thousand, four hundred twelve".