121610 has 8 divisors (see below), whose sum is σ = 218916. Its totient is φ = 48640.

The previous prime is 121609. The next prime is 121621. The reversal of 121610 is 16121.

121610 is nontrivially palindromic in base 3.

It can be written as a sum of positive squares in 2 ways, for example, as 116281 + 5329 = 341^2 + 73^2 .

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

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 = 121591 and 121600.

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, 6071 + ... + 6090.

2¹²¹⁶¹⁰ is an apocalyptic number.

121610 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121610 is a deficient number, since it is larger than the sum of its proper divisors (97306).

121610 is a wasteful number, since it uses less digits than its factorization.

121610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12168.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 121610 is about 348.7262536718. The cubic root of 121610 is about 49.5438512207.

Adding to 121610 its reverse (16121), we get a palindrome (137731).

The spelling of 121610 in words is "one hundred twenty-one thousand, six hundred ten".