121242211 has 12 divisors (see below), whose sum is σ = 128546352. Its totient is φ = 114334704.

The previous prime is 121242193. The next prime is 121242221. The reversal of 121242211 is 112242121.

It is not a de Polignac number, because 121242211 - 2⁷ = 121242083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121242221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 94305 + ... + 95581.

It is an arithmetic number, because the mean of its divisors is an integer number (10712196).

Almost surely, 2^121242211 is an apocalyptic number.

121242211 is a deficient number, since it is larger than the sum of its proper divisors (7304141).

121242211 is a wasteful number, since it uses less digits than its factorization.

121242211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1578 (or 1559 counting only the distinct ones).

The product of its digits is 64, while the sum is 16.

The square root of 121242211 is about 11011.0040868215. The cubic root of 121242211 is about 494.9385510226.

Adding to 121242211 its reverse (112242121), we get a palindrome (233484332).

The spelling of 121242211 in words is "one hundred twenty-one million, two hundred forty-two thousand, two hundred eleven".