210404212211 has 4 divisors (see below), whose sum is σ = 210405828552. Its totient is φ = 210402595872.

The previous prime is 210404212199. The next prime is 210404212219. The reversal of 210404212211 is 112212404012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210404212211 is a prime.

It is a super-2 number, since 2×210404212211² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210404212219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 593990 + ... + 879563.

It is an arithmetic number, because the mean of its divisors is an integer number (52601457138).

Almost surely, 2^210404212211 is an apocalyptic number.

210404212211 is a deficient number, since it is larger than the sum of its proper divisors (1616341).

210404212211 is a wasteful number, since it uses less digits than its factorization.

210404212211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1616340.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 210404212211 its reverse (112212404012), we get a palindrome (322616616223).

The spelling of 210404212211 in words is "two hundred ten billion, four hundred four million, two hundred twelve thousand, two hundred eleven".