1122212999 has 4 divisors (see below), whose sum is σ = 1123796520. Its totient is φ = 1120629480.

The previous prime is 1122212983. The next prime is 1122213023. The reversal of 1122212999 is 9992122211.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1122212999 - 2⁴ = 1122212983 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 (1122212909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 790697 + ... + 792114.

It is an arithmetic number, because the mean of its divisors is an integer number (280949130).

Almost surely, 2^1122212999 is an apocalyptic number.

1122212999 is a deficient number, since it is larger than the sum of its proper divisors (1583521).

1122212999 is an equidigital number, since it uses as much as digits as its factorization.

1122212999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1583520.

The product of its digits is 11664, while the sum is 38.

The square root of 1122212999 is about 33499.4477417166. The cubic root of 1122212999 is about 1039.1823575272.

It can be divided in two parts, 1122212 and 999, that added together give a palindrome (1123211).

The spelling of 1122212999 in words is "one billion, one hundred twenty-two million, two hundred twelve thousand, nine hundred ninety-nine".