1155400222 has 16 divisors (see below), whose sum is σ = 1834871760. Its totient is φ = 544128192.

The previous prime is 1155400217. The next prime is 1155400237. The reversal of 1155400222 is 2220045511.

It is a junction number, because it is equal to n+sod(n) for n = 1155400193 and 1155400202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81303 + ... + 94450.

It is an arithmetic number, because the mean of its divisors is an integer number (114679485).

Almost surely, 2^1155400222 is an apocalyptic number.

1155400222 is a deficient number, since it is larger than the sum of its proper divisors (679471538).

1155400222 is a wasteful number, since it uses less digits than its factorization.

1155400222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175947.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 1155400222 is about 33991.1785909227. The cubic root of 1155400222 is about 1049.3269222219.

Adding to 1155400222 its reverse (2220045511), we get a palindrome (3375445733).

The spelling of 1155400222 in words is "one billion, one hundred fifty-five million, four hundred thousand, two hundred twenty-two".