211223104 has 28 divisors (see below), whose sum is σ = 420738300. Its totient is φ = 105210368.

The previous prime is 211223087. The next prime is 211223137. The reversal of 211223104 is 401322112.

It can be written as a sum of positive squares in 2 ways, for example, as 108160000 + 103063104 = 10400^2 + 10152^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

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, 11082 + ... + 23350.

Almost surely, 2^211223104 is an apocalyptic number.

It is an amenable number.

211223104 is a deficient number, since it is larger than the sum of its proper divisors (209515196).

211223104 is a wasteful number, since it uses less digits than its factorization.

211223104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12550 (or 12540 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 211223104 is about 14533.5165737684. The cubic root of 211223104 is about 595.5439358970.

Adding to 211223104 its reverse (401322112), we get a palindrome (612545216).

The spelling of 211223104 in words is "two hundred eleven million, two hundred twenty-three thousand, one hundred four".