211404012434 has 16 divisors (see below), whose sum is σ = 321028804440. Its totient is φ = 104399529600.

The previous prime is 211404012349. The next prime is 211404012481. The reversal of 211404012434 is 434210404112.

It can be written as a sum of positive squares in 4 ways, for example, as 206749361809 + 4654650625 = 454697^2 + 68225^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1196789 + ... + 1362024.

Almost surely, 2^211404012434 is an apocalyptic number.

211404012434 is a deficient number, since it is larger than the sum of its proper divisors (109624792006).

211404012434 is a wasteful number, since it uses less digits than its factorization.

211404012434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2559325.

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 211404012434 its reverse (434210404112), we get a palindrome (645614416546).

The spelling of 211404012434 in words is "two hundred eleven billion, four hundred four million, twelve thousand, four hundred thirty-four".