1143212211 has 12 divisors (see below), whose sum is σ = 1712466392. Its totient is φ = 762141312.

The previous prime is 1143212207. The next prime is 1143212237. The reversal of 1143212211 is 1122123411.

1143212211 is a `hidden beast` number, since 11 + 432 + 1 + 221 + 1 = 666.

It is not a de Polignac number, because 1143212211 - 2² = 1143212207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1143212201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2352046 + ... + 2352531.

Almost surely, 2^1143212211 is an apocalyptic number.

1143212211 is a deficient number, since it is larger than the sum of its proper divisors (569254181).

1143212211 is an frugal number, since it uses more digits than its factorization.

1143212211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4704592 (or 4704580 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

The square root of 1143212211 is about 33811.4213099657. The cubic root of 1143212211 is about 1045.6241811784.

Adding to 1143212211 its reverse (1122123411), we get a palindrome (2265335622).

The spelling of 1143212211 in words is "one billion, one hundred forty-three million, two hundred twelve thousand, two hundred eleven".