211122404 has 12 divisors (see below), whose sum is σ = 369616128. Its totient is φ = 105517800.

The previous prime is 211122397. The next prime is 211122419. The reversal of 211122404 is 404221112.

211122404 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 1709 + ... + 20619.

It is an arithmetic number, because the mean of its divisors is an integer number (30801344).

Almost surely, 2^211122404 is an apocalyptic number.

It is an amenable number.

211122404 is a deficient number, since it is larger than the sum of its proper divisors (158493724).

211122404 is a wasteful number, since it uses less digits than its factorization.

211122404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21706 (or 21704 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 211122404 is about 14530.0517548975. The cubic root of 211122404 is about 595.4492795737.

Adding to 211122404 its reverse (404221112), we get a palindrome (615343516).

The spelling of 211122404 in words is "two hundred eleven million, one hundred twenty-two thousand, four hundred four".