1122111212 has 48 divisors (see below), whose sum is σ = 2083257792. Its totient is φ = 527788800.

The previous prime is 1122111209. The next prime is 1122111233. The reversal of 1122111212 is 2121112211.

It is a super-2 number, since 2×1122111212² = 2518267144192217888, which contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 1830218 + ... + 1830830.

It is an arithmetic number, because the mean of its divisors is an integer number (43401204).

Almost surely, 2^1122111212 is an apocalyptic number.

It is an amenable number.

1122111212 is a deficient number, since it is larger than the sum of its proper divisors (961146580).

1122111212 is a wasteful number, since it uses less digits than its factorization.

1122111212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 938 (or 936 counting only the distinct ones).

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

The square root of 1122111212 is about 33497.9284732653. The cubic root of 1122111212 is about 1039.1509379266.

Adding to 1122111212 its reverse (2121112211), we get a palindrome (3243223423).

Subtracting 1122111212 from its reverse (2121112211), we obtain a palindrome (999000999).

The spelling of 1122111212 in words is "one billion, one hundred twenty-two million, one hundred eleven thousand, two hundred twelve".