211421030223 has 64 divisors (see below), whose sum is σ = 316296658944. Its totient is φ = 124737840000.

The previous prime is 211421030209. The next prime is 211421030251. The reversal of 211421030223 is 322030124112.

It is not a de Polignac number, because 211421030223 - 2⁴ = 211421030207 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 211421030223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211321030223) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 78681586 + ... + 78684272.

It is an arithmetic number, because the mean of its divisors is an integer number (4942135296).

Almost surely, 2^211421030223 is an apocalyptic number.

211421030223 is a deficient number, since it is larger than the sum of its proper divisors (104875628721).

211421030223 is a wasteful number, since it uses less digits than its factorization.

211421030223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3316.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 211421030223 its reverse (322030124112), we get a palindrome (533451154335).

The spelling of 211421030223 in words is "two hundred eleven billion, four hundred twenty-one million, thirty thousand, two hundred twenty-three".