121446646 has 4 divisors (see below), whose sum is σ = 182169972. Its totient is φ = 60723322.

The previous prime is 121446631. The next prime is 121446649. The reversal of 121446646 is 646644121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 646644121 = 107 ⋅6043403.

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 as a sum of consecutive naturals, namely, 30361660 + ... + 30361663.

It is an arithmetic number, because the mean of its divisors is an integer number (45542493).

Almost surely, 2^121446646 is an apocalyptic number.

121446646 is a deficient number, since it is larger than the sum of its proper divisors (60723326).

121446646 is an equidigital number, since it uses as much as digits as its factorization.

121446646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60723325.

The product of its digits is 27648, while the sum is 34.

The square root of 121446646 is about 11020.2833901856. The cubic root of 121446646 is about 495.2165783548.

The spelling of 121446646 in words is "one hundred twenty-one million, four hundred forty-six thousand, six hundred forty-six".