1222354121 has 4 divisors (see below), whose sum is σ = 1239098772. Its totient is φ = 1205609472.

The previous prime is 1222354099. The next prime is 1222354127. The reversal of 1222354121 is 1214532221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1214532221 = 7 ⋅173504603.

It can be written as a sum of positive squares in 2 ways, for example, as 908178496 + 314175625 = 30136^2 + 17725^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222354121 - 2³⁰ = 148612297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1222354127) 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, 8372216 + ... + 8372361.

It is an arithmetic number, because the mean of its divisors is an integer number (309774693).

Almost surely, 2^1222354121 is an apocalyptic number.

It is an amenable number.

1222354121 is a deficient number, since it is larger than the sum of its proper divisors (16744651).

1222354121 is an equidigital number, since it uses as much as digits as its factorization.

1222354121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16744650.

The product of its digits is 960, while the sum is 23.

The square root of 1222354121 is about 34962.1812963665. The cubic root of 1222354121 is about 1069.2165695113.

Adding to 1222354121 its reverse (1214532221), we get a palindrome (2436886342).

The spelling of 1222354121 in words is "one billion, two hundred twenty-two million, three hundred fifty-four thousand, one hundred twenty-one".