121209066 has 48 divisors (see below), whose sum is σ = 289493568. Its totient is φ = 36345600.

The previous prime is 121209041. The next prime is 121209083. The reversal of 121209066 is 660902121.

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 23 ways as a sum of consecutive naturals, for example, 16051 + ... + 22361.

It is an arithmetic number, because the mean of its divisors is an integer number (6031116).

Almost surely, 2^121209066 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121209066, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144746784).

121209066 is an abundant number, since it is smaller than the sum of its proper divisors (168284502).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121209066 is a wasteful number, since it uses less digits than its factorization.

121209066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6427 (or 6424 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 121209066 is about 11009.4988986784. The cubic root of 121209066 is about 494.8934450778.

The spelling of 121209066 in words is "one hundred twenty-one million, two hundred nine thousand, sixty-six".