1122155445 has 32 divisors (see below), whose sum is σ = 1846301184. Its totient is φ = 581644800.

The previous prime is 1122155417. The next prime is 1122155467. The reversal of 1122155445 is 5445512211.

It is not a de Polignac number, because 1122155445 - 2⁶ = 1122155381 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 163299 + ... + 170031.

It is an arithmetic number, because the mean of its divisors is an integer number (57696912).

Almost surely, 2^1122155445 is an apocalyptic number.

1122155445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1122155445 is a deficient number, since it is larger than the sum of its proper divisors (724145739).

1122155445 is a wasteful number, since it uses less digits than its factorization.

1122155445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7053.

The product of its digits is 8000, while the sum is 30.

The square root of 1122155445 is about 33498.5887016155. The cubic root of 1122155445 is about 1039.1645919979.

Adding to 1122155445 its reverse (5445512211), we get a palindrome (6567667656).

It can be divided in two parts, 11221 and 55445, that added together give a palindrome (66666).

The spelling of 1122155445 in words is "one billion, one hundred twenty-two million, one hundred fifty-five thousand, four hundred forty-five".