121611634 has 8 divisors (see below), whose sum is σ = 182474460. Its totient is φ = 60786816.

The previous prime is 121611631. The next prime is 121611641. The reversal of 121611634 is 436116121.

It can be written as a sum of positive squares in 2 ways, for example, as 121550625 + 61009 = 11025^2 + 247^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 121611599 and 121611608.

It is not an unprimeable number, because it can be changed into a prime (121611631) 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, 682 + ... + 15610.

Almost surely, 2^121611634 is an apocalyptic number.

121611634 is a deficient number, since it is larger than the sum of its proper divisors (60862826).

121611634 is a wasteful number, since it uses less digits than its factorization.

121611634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19004.

The product of its digits is 864, while the sum is 25.

The square root of 121611634 is about 11027.7665009738. The cubic root of 121611634 is about 495.4407311664.

Adding to 121611634 its reverse (436116121), we get a palindrome (557727755).

The spelling of 121611634 in words is "one hundred twenty-one million, six hundred eleven thousand, six hundred thirty-four".