121201646 has 8 divisors (see below), whose sum is σ = 191371080. Its totient is φ = 57411288.

The previous prime is 121201609. The next prime is 121201657. The reversal of 121201646 is 646102121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1594721 + ... + 1594796.

It is an arithmetic number, because the mean of its divisors is an integer number (23921385).

Almost surely, 2^121201646 is an apocalyptic number.

121201646 is a deficient number, since it is larger than the sum of its proper divisors (70169434).

121201646 is a wasteful number, since it uses less digits than its factorization.

121201646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3189538.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 121201646 is about 11009.1619117897. The cubic root of 121201646 is about 494.8833463165.

Adding to 121201646 its reverse (646102121), we get a palindrome (767303767).

The spelling of 121201646 in words is "one hundred twenty-one million, two hundred one thousand, six hundred forty-six".