1222002242 has 4 divisors (see below), whose sum is σ = 1833003366. Its totient is φ = 611001120.

The previous prime is 1222002241. The next prime is 1222002247. The reversal of 1222002242 is 2422002221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2422002221 = 3533 ⋅685537.

It can be written as a sum of positive squares in only one way, i.e., 1120173961 + 101828281 = 33469^2 + 10091^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1222002242.

It is not an unprimeable number, because it can be changed into a prime (1222002241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305500559 + ... + 305500562.

Almost surely, 2^1222002242 is an apocalyptic number.

1222002242 is a deficient number, since it is larger than the sum of its proper divisors (611001124).

1222002242 is an equidigital number, since it uses as much as digits as its factorization.

1222002242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611001123.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 1222002242 is about 34957.1486537446. The cubic root of 1222002242 is about 1069.1139612304.

Adding to 1222002242 its reverse (2422002221), we get a palindrome (3644004463).

The spelling of 1222002242 in words is "one billion, two hundred twenty-two million, two thousand, two hundred forty-two".