121611416 has 16 divisors (see below), whose sum is σ = 229554000. Its totient is φ = 60397024.

The previous prime is 121611407. The next prime is 121611431. The reversal of 121611416 is 614116121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 121611391 and 121611400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49820 + ... + 52203.

It is an arithmetic number, because the mean of its divisors is an integer number (14347125).

Almost surely, 2^121611416 is an apocalyptic number.

It is an amenable number.

121611416 is a deficient number, since it is larger than the sum of its proper divisors (107942584).

121611416 is a wasteful number, since it uses less digits than its factorization.

121611416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102178 (or 102174 counting only the distinct ones).

The product of its digits is 288, while the sum is 23.

The square root of 121611416 is about 11027.7566168283. The cubic root of 121611416 is about 495.4404351252.

Adding to 121611416 its reverse (614116121), we get a palindrome (735727537).

The spelling of 121611416 in words is "one hundred twenty-one million, six hundred eleven thousand, four hundred sixteen".