121044221 has 2 divisors, whose sum is σ = 121044222. Its totient is φ = 121044220.

The previous prime is 121044211. The next prime is 121044227. The reversal of 121044221 is 122440121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83356900 + 37687321 = 9130^2 + 6139^2 .

It is a cyclic number.

It is not a de Polignac number, because 121044221 - 2²² = 116849917 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121044221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121044227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60522110 + 60522111.

It is an arithmetic number, because the mean of its divisors is an integer number (60522111).

Almost surely, 2^121044221 is an apocalyptic number.

It is an amenable number.

121044221 is a deficient number, since it is larger than the sum of its proper divisors (1).

121044221 is an equidigital number, since it uses as much as digits as its factorization.

121044221 is an evil number, because the sum of its binary digits is even.

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

The square root of 121044221 is about 11002.0098618389. The cubic root of 121044221 is about 494.6689906867.

Adding to 121044221 its reverse (122440121), we get a palindrome (243484342).

The spelling of 121044221 in words is "one hundred twenty-one million, forty-four thousand, two hundred twenty-one".