1122151805 has 18 divisors (see below), whose sum is σ = 1372318974. Its totient is φ = 880882800.

The previous prime is 1122151769. The next prime is 1122151829. The reversal of 1122151805 is 5081512211.

It can be written as a sum of positive squares in only one way, i.e., 897721444 + 224430361 = 29962^2 + 14981^2 .

It is not a de Polignac number, because 1122151805 - 2¹² = 1122147709 is a prime.

It is a Duffinian number.

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 17 ways as a sum of consecutive naturals, for example, 5318150 + ... + 5318360.

It is an arithmetic number, because the mean of its divisors is an integer number (76239943).

Almost surely, 2^1122151805 is an apocalyptic number.

It is an amenable number.

1122151805 is a deficient number, since it is larger than the sum of its proper divisors (250167169).

1122151805 is an frugal number, since it uses more digits than its factorization.

1122151805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569 (or 287 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 26.

The square root of 1122151805 is about 33498.5343709243. The cubic root of 1122151805 is about 1039.1634683974.

The spelling of 1122151805 in words is "one billion, one hundred twenty-two million, one hundred fifty-one thousand, eight hundred five".