1211244412 has 12 divisors (see below), whose sum is σ = 2422488880. Its totient is φ = 519104736.

The previous prime is 1211244409. The next prime is 1211244467. The reversal of 1211244412 is 2144421121.

1211244412 is an admirable number.

It is a super-2 number, since 2×1211244412² = 2934226051202451488, 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 an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21629337 + ... + 21629392.

Almost surely, 2^1211244412 is an apocalyptic number.

It is an amenable number.

1211244412 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1211244412 is a wasteful number, since it uses less digits than its factorization.

1211244412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43258740 (or 43258738 counting only the distinct ones).

The product of its digits is 512, while the sum is 22.

The square root of 1211244412 is about 34802.9368301010. The cubic root of 1211244412 is about 1065.9674141449.

Adding to 1211244412 its reverse (2144421121), we get a palindrome (3355665533).

The spelling of 1211244412 in words is "one billion, two hundred eleven million, two hundred forty-four thousand, four hundred twelve".