121422211 has 4 divisors (see below), whose sum is σ = 128564712. Its totient is φ = 114279712.

The previous prime is 121422187. The next prime is 121422233. The reversal of 121422211 is 112224121.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 121422211 - 2¹¹ = 121420163 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (121422241) 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 3 ways as a sum of consecutive naturals, for example, 3571225 + ... + 3571258.

It is an arithmetic number, because the mean of its divisors is an integer number (32141178).

Almost surely, 2^121422211 is an apocalyptic number.

121422211 is a deficient number, since it is larger than the sum of its proper divisors (7142501).

121422211 is an equidigital number, since it uses as much as digits as its factorization.

121422211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7142500.

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

The square root of 121422211 is about 11019.1746968636. The cubic root of 121422211 is about 495.1833636905.

Adding to 121422211 its reverse (112224121), we get a palindrome (233646332).

The spelling of 121422211 in words is "one hundred twenty-one million, four hundred twenty-two thousand, two hundred eleven".