211304422 has 16 divisors (see below), whose sum is σ = 363400992. Its totient is φ = 90267840.

The previous prime is 211304419. The next prime is 211304477. The reversal of 211304422 is 224403112.

It is a self number, because there is not a number n which added to its sum of digits gives 211304422.

It is a congruent number.

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, 19729 + ... + 28492.

It is an arithmetic number, because the mean of its divisors is an integer number (22712562).

Almost surely, 2^211304422 is an apocalyptic number.

211304422 is a deficient number, since it is larger than the sum of its proper divisors (152096570).

211304422 is a wasteful number, since it uses less digits than its factorization.

211304422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48543.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 211304422 is about 14536.3139069023. The cubic root of 211304422 is about 595.6203515091.

Adding to 211304422 its reverse (224403112), we get a palindrome (435707534).

It can be divided in two parts, 21130 and 4422, that added together give a palindrome (25552).

The spelling of 211304422 in words is "two hundred eleven million, three hundred four thousand, four hundred twenty-two".