121243066 has 32 divisors (see below), whose sum is σ = 222082560. Its totient is φ = 48484656.

The previous prime is 121243063. The next prime is 121243069. The reversal of 121243066 is 660342121.

It is an interprime number because it is at equal distance from previous prime (121243063) and next prime (121243069).

It is a self number, because there is not a number n which added to its sum of digits gives 121243066.

It is not an unprimeable number, because it can be changed into a prime (121243063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14421 + ... + 21223.

It is an arithmetic number, because the mean of its divisors is an integer number (6940080).

Almost surely, 2^121243066 is an apocalyptic number.

121243066 is a deficient number, since it is larger than the sum of its proper divisors (100839494).

121243066 is a wasteful number, since it uses less digits than its factorization.

121243066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6898.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 121243066 is about 11011.0429115502. The cubic root of 121243066 is about 494.9397144553.

Adding to 121243066 its reverse (660342121), we get a palindrome (781585187).

The spelling of 121243066 in words is "one hundred twenty-one million, two hundred forty-three thousand, sixty-six".