121324645 has 16 divisors (see below), whose sum is σ = 158780160. Its totient is φ = 88455744.

The previous prime is 121324639. The next prime is 121324657. The reversal of 121324645 is 546423121.

It is not a de Polignac number, because 121324645 - 2¹⁷ = 121193573 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6679 + ... + 16948.

It is an arithmetic number, because the mean of its divisors is an integer number (9923760).

Almost surely, 2^121324645 is an apocalyptic number.

It is an amenable number.

121324645 is a deficient number, since it is larger than the sum of its proper divisors (37455515).

121324645 is a wasteful number, since it uses less digits than its factorization.

121324645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23724.

The product of its digits is 5760, while the sum is 28.

The square root of 121324645 is about 11014.7467061208. The cubic root of 121324645 is about 495.0506971168.

Adding to 121324645 its reverse (546423121), we get a palindrome (667747766).

The spelling of 121324645 in words is "one hundred twenty-one million, three hundred twenty-four thousand, six hundred forty-five".