12222202442 has 4 divisors (see below), whose sum is σ = 18333303666. Its totient is φ = 6111101220.

The previous prime is 12222202441. The next prime is 12222202451. The reversal of 12222202442 is 24420222221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24420222221 = 10883 ⋅2243887.

It can be written as a sum of positive squares in only one way, i.e., 8634312241 + 3587890201 = 92921^2 + 59899^2 .

It is not an unprimeable number, because it can be changed into a prime (12222202441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3055550609 + ... + 3055550612.

Almost surely, 2^12222202442 is an apocalyptic number.

12222202442 is a deficient number, since it is larger than the sum of its proper divisors (6111101224).

12222202442 is an equidigital number, since it uses as much as digits as its factorization.

12222202442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6111101223.

The product of its (nonzero) digits is 2048, while the sum is 23.

Adding to 12222202442 its reverse (24420222221), we get a palindrome (36642424663).

The spelling of 12222202442 in words is "twelve billion, two hundred twenty-two million, two hundred two thousand, four hundred forty-two".