1211244212 has 12 divisors (see below), whose sum is σ = 2136368640. Its totient is φ = 600853176.

The previous prime is 1211244211. The next prime is 1211244227. The reversal of 1211244212 is 2124421121.

It is a super-2 number, since 2×1211244212² = 2934225082207001888, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211244211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1191662 + ... + 1192677.

It is an arithmetic number, because the mean of its divisors is an integer number (178030720).

Almost surely, 2^1211244212 is an apocalyptic number.

It is an amenable number.

1211244212 is a deficient number, since it is larger than the sum of its proper divisors (925124428).

1211244212 is a wasteful number, since it uses less digits than its factorization.

1211244212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2384470 (or 2384468 counting only the distinct ones).

The product of its digits is 256, while the sum is 20.

The square root of 1211244212 is about 34802.9339567801. The cubic root of 1211244212 is about 1065.9673554743.

Adding to 1211244212 its reverse (2124421121), we get a palindrome (3335665333).

The spelling of 1211244212 in words is "one billion, two hundred eleven million, two hundred forty-four thousand, two hundred twelve".