121612 has 6 divisors (see below), whose sum is σ = 212828. Its totient is φ = 60804.

The previous prime is 121609. The next prime is 121621. The reversal of 121612 is 216121.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 121592 and 121601.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15198 + ... + 15205.

2¹²¹⁶¹² is an apocalyptic number.

It is an amenable number.

121612 is a deficient number, since it is larger than the sum of its proper divisors (91216).

121612 is a wasteful number, since it uses less digits than its factorization.

121612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30407 (or 30405 counting only the distinct ones).

The product of its digits is 24, while the sum is 13.

The square root of 121612 is about 348.7291212388. The cubic root of 121612 is about 49.5441228189.

Adding to 121612 its reverse (216121), we get a palindrome (337733).

The spelling of 121612 in words is "one hundred twenty-one thousand, six hundred twelve".