1001111212 has 12 divisors (see below), whose sum is σ = 1752240280. Its totient is φ = 500471136.

The previous prime is 1001111171. The next prime is 1001111219. The reversal of 1001111212 is 2121111001.

It is not an unprimeable number, because it can be changed into a prime (1001111219) 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, 10963 + ... + 46069.

Almost surely, 2^1001111212 is an apocalyptic number.

It is an amenable number.

1001111212 is a deficient number, since it is larger than the sum of its proper divisors (751129068).

1001111212 is a wasteful number, since it uses less digits than its factorization.

1001111212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42240 (or 42238 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

The square root of 1001111212 is about 31640.3415278660. The cubic root of 1001111212 is about 1000.3702668855.

Adding to 1001111212 its reverse (2121111001), we get a palindrome (3122222213).

The spelling of 1001111212 in words is "one billion, one million, one hundred eleven thousand, two hundred twelve".