1122212109 has 32 divisors (see below), whose sum is σ = 1644160896. Its totient is φ = 677928960.

The previous prime is 1122212093. The next prime is 1122212123. The reversal of 1122212109 is 9012122211.

It is not a de Polignac number, because 1122212109 - 2⁴ = 1122212093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122212129) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 179974 + ... + 186104.

It is an arithmetic number, because the mean of its divisors is an integer number (51380028).

Almost surely, 2^1122212109 is an apocalyptic number.

It is an amenable number.

1122212109 is a deficient number, since it is larger than the sum of its proper divisors (521948787).

1122212109 is a wasteful number, since it uses less digits than its factorization.

1122212109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6285.

The product of its (nonzero) digits is 144, while the sum is 21.

The square root of 1122212109 is about 33499.4344579129. The cubic root of 1122212109 is about 1039.1820828103.

The spelling of 1122212109 in words is "one billion, one hundred twenty-two million, two hundred twelve thousand, one hundred nine".