211304023201 has 4 divisors (see below), whose sum is σ = 222425287600. Its totient is φ = 200182758804.

The previous prime is 211304023187. The next prime is 211304023237. The reversal of 211304023201 is 102320403112.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 211304023201 - 2⁵ = 211304023169 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 11121264379 = 211304023201 / (2 + 1 + 1 + 3 + 0 + 4 + 0 + 2 + 3 + 2 + 0 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211304023001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5560632171 + ... + 5560632208.

It is an arithmetic number, because the mean of its divisors is an integer number (55606321900).

Almost surely, 2^211304023201 is an apocalyptic number.

It is an amenable number.

211304023201 is a deficient number, since it is larger than the sum of its proper divisors (11121264399).

211304023201 is a wasteful number, since it uses less digits than its factorization.

211304023201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11121264398.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 211304023201 its reverse (102320403112), we get a palindrome (313624426313).

The spelling of 211304023201 in words is "two hundred eleven billion, three hundred four million, twenty-three thousand, two hundred one".