121446645 has 16 divisors (see below), whose sum is σ = 194527872. Its totient is φ = 64700480.

The previous prime is 121446631. The next prime is 121446649. The reversal of 121446645 is 546644121.

It is not a de Polignac number, because 121446645 - 2⁷ = 121446517 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121446649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11539 + ... + 19391.

It is an arithmetic number, because the mean of its divisors is an integer number (12157992).

Almost surely, 2^121446645 is an apocalyptic number.

121446645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121446645 is a deficient number, since it is larger than the sum of its proper divisors (73081227).

121446645 is a wasteful number, since it uses less digits than its factorization.

121446645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8892.

The product of its digits is 23040, while the sum is 33.

The square root of 121446645 is about 11020.2833448147. The cubic root of 121446645 is about 495.2165769956.

It can be divided in two parts, 121 and 446645, that multiplied together give a palindrome (54044045).

The spelling of 121446645 in words is "one hundred twenty-one million, four hundred forty-six thousand, six hundred forty-five".