121222211 has 8 divisors (see below), whose sum is σ = 132812784. Its totient is φ = 109726720.

The previous prime is 121222193. The next prime is 121222237. The reversal of 121222211 is 112222121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121222211 - 2²² = 117027907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121222511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21086 + ... + 26211.

It is an arithmetic number, because the mean of its divisors is an integer number (16601598).

Almost surely, 2^121222211 is an apocalyptic number.

121222211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121222211 is a deficient number, since it is larger than the sum of its proper divisors (11590573).

121222211 is a wasteful number, since it uses less digits than its factorization.

121222211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47541.

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

The square root of 121222211 is about 11010.0958669759. The cubic root of 121222211 is about 494.9113346615.

Adding to 121222211 its reverse (112222121), we get a palindrome (233444332).

It can be divided in two parts, 1 and 21222211, that added together give a palindrome (21222212).

The spelling of 121222211 in words is "one hundred twenty-one million, two hundred twenty-two thousand, two hundred eleven".