121324661 has 8 divisors (see below), whose sum is σ = 125644800. Its totient is φ = 117013680.

The previous prime is 121324657. The next prime is 121324663. The reversal of 121324661 is 166423121.

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

It is a cyclic number.

It is not a de Polignac number, because 121324661 - 2² = 121324657 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121324661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121324663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35456 + ... + 38726.

It is an arithmetic number, because the mean of its divisors is an integer number (15705600).

Almost surely, 2^121324661 is an apocalyptic number.

It is an amenable number.

121324661 is a deficient number, since it is larger than the sum of its proper divisors (4320139).

121324661 is a wasteful number, since it uses less digits than its factorization.

121324661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4579.

The product of its digits is 1728, while the sum is 26.

The square root of 121324661 is about 11014.7474324199. The cubic root of 121324661 is about 495.0507188788.

Adding to 121324661 its reverse (166423121), we get a palindrome (287747782).

The spelling of 121324661 in words is "one hundred twenty-one million, three hundred twenty-four thousand, six hundred sixty-one".