121242011 has 32 divisors (see below), whose sum is σ = 147225600. Its totient is φ = 98542080.

The previous prime is 121241987. The next prime is 121242041. The reversal of 121242011 is 110242121.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121242011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121242041) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 428276 + ... + 428558.

It is an arithmetic number, because the mean of its divisors is an integer number (4600800).

Almost surely, 2^121242011 is an apocalyptic number.

121242011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121242011 is a deficient number, since it is larger than the sum of its proper divisors (25983589).

121242011 is a wasteful number, since it uses less digits than its factorization.

121242011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 121242011 is about 11010.9950049939. The cubic root of 121242011 is about 494.9382788738.

Adding to 121242011 its reverse (110242121), we get a palindrome (231484132).

The spelling of 121242011 in words is "one hundred twenty-one million, two hundred forty-two thousand, eleven".