1211443434 has 48 divisors (see below), whose sum is σ = 2648266920. Its totient is φ = 400222080.

The previous prime is 1211443427. The next prime is 1211443463. The reversal of 1211443434 is 4343441121.

1211443434 is a `hidden beast` number, since 1 + 211 + 443 + 4 + 3 + 4 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1148193225 + 63250209 = 33885^2 + 7953^2 .

It is a super-3 number, since 3×1211443434³ (a number of 28 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1211443398 and 1211443407.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 1141264 + ... + 1142324.

Almost surely, 2^1211443434 is an apocalyptic number.

1211443434 is an abundant number, since it is smaller than the sum of its proper divisors (1436823486).

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

1211443434 is a wasteful number, since it uses less digits than its factorization.

1211443434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1575 (or 1572 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

The square root of 1211443434 is about 34805.7959828532. The cubic root of 1211443434 is about 1066.0257946958.

Adding to 1211443434 its reverse (4343441121), we get a palindrome (5554884555).

The spelling of 1211443434 in words is "one billion, two hundred eleven million, four hundred forty-three thousand, four hundred thirty-four".