1122312243 has 16 divisors (see below), whose sum is σ = 1635581696. Its totient is φ = 680343840.

The previous prime is 1122312227. The next prime is 1122312277. The reversal of 1122312243 is 3422132211.

It is not a de Polignac number, because 1122312243 - 2⁴ = 1122312227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1122312203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 212143 + ... + 217368.

It is an arithmetic number, because the mean of its divisors is an integer number (102223856).

Almost surely, 2^1122312243 is an apocalyptic number.

1122312243 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1122312243 is a deficient number, since it is larger than the sum of its proper divisors (513269453).

1122312243 is a wasteful number, since it uses less digits than its factorization.

1122312243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429594.

The product of its digits is 576, while the sum is 21.

The square root of 1122312243 is about 33500.9289871191. The cubic root of 1122312243 is about 1039.2129903257.

Adding to 1122312243 its reverse (3422132211), we get a palindrome (4544444454).

The spelling of 1122312243 in words is "one billion, one hundred twenty-two million, three hundred twelve thousand, two hundred forty-three".