1122331212 has 72 divisors (see below), whose sum is σ = 2984890272. Its totient is φ = 355104000.

The previous prime is 1122331181. The next prime is 1122331247. The reversal of 1122331212 is 2121332211.

1122331212 is a `hidden beast` number, since 1 + 122 + 331 + 212 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44337 + ... + 64887.

Almost surely, 2^1122331212 is an apocalyptic number.

1122331212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1122331212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1492445136).

1122331212 is an abundant number, since it is smaller than the sum of its proper divisors (1862559060).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1122331212 is a wasteful number, since it uses less digits than its factorization.

1122331212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20639 (or 20634 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 1122331212 is about 33501.2120974749. The cubic root of 1122331212 is about 1039.2188451194.

Adding to 1122331212 its reverse (2121332211), we get a palindrome (3243663423).

Subtracting 1122331212 from its reverse (2121332211), we obtain a palindrome (999000999).

The spelling of 1122331212 in words is "one billion, one hundred twenty-two million, three hundred thirty-one thousand, two hundred twelve".