1122212111 has 8 divisors (see below), whose sum is σ = 1140126624. Its totient is φ = 1104431200.

The previous prime is 1122212093. The next prime is 1122212123. The reversal of 1122212111 is 1112122211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1122212111 - 2¹⁰ = 1122211087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122212141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16400 + ... + 50133.

It is an arithmetic number, because the mean of its divisors is an integer number (142515828).

Almost surely, 2^1122212111 is an apocalyptic number.

1122212111 is a deficient number, since it is larger than the sum of its proper divisors (17914513).

1122212111 is a wasteful number, since it uses less digits than its factorization.

1122212111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66801.

The product of its digits is 16, while the sum is 14.

The square root of 1122212111 is about 33499.4344877641. The cubic root of 1122212111 is about 1039.1820834277.

Adding to 1122212111 its reverse (1112122211), we get a palindrome (2234334322).

The spelling of 1122212111 in words is "one billion, one hundred twenty-two million, two hundred twelve thousand, one hundred eleven".