1091319122 has 4 divisors (see below), whose sum is σ = 1636978686. Its totient is φ = 545659560.

The previous prime is 1091319101. The next prime is 1091319139. The reversal of 1091319122 is 2219131901.

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

It can be written as a sum of positive squares in only one way, i.e., 647753401 + 443565721 = 25451^2 + 21061^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272829779 + ... + 272829782.

Almost surely, 2^1091319122 is an apocalyptic number.

1091319122 is a deficient number, since it is larger than the sum of its proper divisors (545659564).

1091319122 is an equidigital number, since it uses as much as digits as its factorization.

1091319122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545659563.

The product of its (nonzero) digits is 972, while the sum is 29.

The square root of 1091319122 is about 33035.1195245303. The cubic root of 1091319122 is about 1029.5574565389.

The spelling of 1091319122 in words is "one billion, ninety-one million, three hundred nineteen thousand, one hundred twenty-two".