1222242243 has 4 divisors (see below), whose sum is σ = 1629656328. Its totient is φ = 814828160.

The previous prime is 1222242233. The next prime is 1222242253. The reversal of 1222242243 is 3422422221.

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

It is an interprime number because it is at equal distance from previous prime (1222242233) and next prime (1222242253).

It is a cyclic number.

It is not a de Polignac number, because 1222242243 - 2⁴ = 1222242227 is a prime.

It is a super-2 number, since 2×1222242243² = 2987752201147342098, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1222242233) 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, 203707038 + ... + 203707043.

It is an arithmetic number, because the mean of its divisors is an integer number (407414082).

Almost surely, 2^1222242243 is an apocalyptic number.

1222242243 is a deficient number, since it is larger than the sum of its proper divisors (407414085).

1222242243 is an equidigital number, since it uses as much as digits as its factorization.

1222242243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407414084.

The product of its digits is 3072, while the sum is 24.

The square root of 1222242243 is about 34960.5812737718. The cubic root of 1222242243 is about 1069.1839479060.

Adding to 1222242243 its reverse (3422422221), we get a palindrome (4644664464).

The spelling of 1222242243 in words is "one billion, two hundred twenty-two million, two hundred forty-two thousand, two hundred forty-three".