1155442544222 has 4 divisors (see below), whose sum is σ = 1733163816336. Its totient is φ = 577721272110.

The previous prime is 1155442544219. The next prime is 1155442544251. The reversal of 1155442544222 is 2224452445511.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1155442544222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 288860636054 + ... + 288860636057.

It is an arithmetic number, because the mean of its divisors is an integer number (433290954084).

Almost surely, 2^{1155442544222} is an apocalyptic number.

1155442544222 is a deficient number, since it is larger than the sum of its proper divisors (577721272114).

1155442544222 is an equidigital number, since it uses as much as digits as its factorization.

1155442544222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577721272113.

The product of its digits is 512000, while the sum is 41.

Adding to 1155442544222 its reverse (2224452445511), we get a palindrome (3379894989733).

The spelling of 1155442544222 in words is "one trillion, one hundred fifty-five billion, four hundred forty-two million, five hundred forty-four thousand, two hundred twenty-two".