1211031212 has 12 divisors (see below), whose sum is σ = 2119640040. Its totient is φ = 605419776.

The previous prime is 1211031209. The next prime is 1211031223. The reversal of 1211031212 is 2121301121.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9743 + ... + 50169.

It is an arithmetic number, because the mean of its divisors is an integer number (176636670).

Almost surely, 2^1211031212 is an apocalyptic number.

It is an amenable number.

1211031212 is a deficient number, since it is larger than the sum of its proper divisors (908608828).

1211031212 is a wasteful number, since it uses less digits than its factorization.

1211031212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47920 (or 47918 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 1211031212 is about 34799.8737354031. The cubic root of 1211031212 is about 1065.9048675645.

Adding to 1211031212 its reverse (2121301121), we get a palindrome (3332332333).

The spelling of 1211031212 in words is "one billion, two hundred eleven million, thirty-one thousand, two hundred twelve".