121222241 has 4 divisors (see below), whose sum is σ = 138539712. Its totient is φ = 103904772.

The previous prime is 121222237. The next prime is 121222253. The reversal of 121222241 is 142222121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 121222241 - 2² = 121222237 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121222141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8658725 + ... + 8658738.

It is an arithmetic number, because the mean of its divisors is an integer number (34634928).

Almost surely, 2^121222241 is an apocalyptic number.

It is an amenable number.

121222241 is a deficient number, since it is larger than the sum of its proper divisors (17317471).

121222241 is an equidigital number, since it uses as much as digits as its factorization.

121222241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17317470.

The product of its digits is 128, while the sum is 17.

The square root of 121222241 is about 11010.0972293618. The cubic root of 121222241 is about 494.9113754883.

Adding to 121222241 its reverse (142222121), we get a palindrome (263444362).

The spelling of 121222241 in words is "one hundred twenty-one million, two hundred twenty-two thousand, two hundred forty-one".