121445506 has 16 divisors (see below), whose sum is σ = 224207424. Its totient is φ = 48044304.

The previous prime is 121445491. The next prime is 121445537. The reversal of 121445506 is 605544121.

It is an unprimeable number.

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, 333460 + ... + 333823.

It is an arithmetic number, because the mean of its divisors is an integer number (14012964).

Almost surely, 2^121445506 is an apocalyptic number.

121445506 is a deficient number, since it is larger than the sum of its proper divisors (102761918).

121445506 is a wasteful number, since it uses less digits than its factorization.

121445506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667305.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 121445506 is about 11020.2316672564. The cubic root of 121445506 is about 495.2150288440.

Adding to 121445506 its reverse (605544121), we get a palindrome (726989627).

The spelling of 121445506 in words is "one hundred twenty-one million, four hundred forty-five thousand, five hundred six".