121113445 has 8 divisors (see below), whose sum is σ = 145434744. Its totient is φ = 96825024.

The previous prime is 121113439. The next prime is 121113449. The reversal of 121113445 is 544311121.

It can be written as a sum of positive squares in 4 ways, for example, as 311364 + 120802081 = 558^2 + 10991^2 .

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 121113445 - 2³ = 121113437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121113449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 787 + ... + 15583.

It is an arithmetic number, because the mean of its divisors is an integer number (18179343).

Almost surely, 2^121113445 is an apocalyptic number.

It is an amenable number.

121113445 is a deficient number, since it is larger than the sum of its proper divisors (24321299).

121113445 is a wasteful number, since it uses less digits than its factorization.

121113445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16439.

The product of its digits is 480, while the sum is 22.

The square root of 121113445 is about 11005.1553828195. The cubic root of 121113445 is about 494.7632714938.

Adding to 121113445 its reverse (544311121), we get a palindrome (665424566).

The spelling of 121113445 in words is "one hundred twenty-one million, one hundred thirteen thousand, four hundred forty-five".