211221000230 has 16 divisors (see below), whose sum is σ = 380269671840. Its totient is φ = 84472428672.

The previous prime is 211221000217. The next prime is 211221000253. The reversal of 211221000230 is 32000122112.

It is a happy number.

It is a super-2 number, since 2×211221000230² (a number of 23 digits) contains 22 as substring.

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, 1940810 + ... + 2046749.

It is an arithmetic number, because the mean of its divisors is an integer number (23766854490).

Almost surely, 2^211221000230 is an apocalyptic number.

211221000230 is a deficient number, since it is larger than the sum of its proper divisors (169048671610).

211221000230 is a wasteful number, since it uses less digits than its factorization.

211221000230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3992863.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 211221000230 its reverse (32000122112), we get a palindrome (243221122342).

The spelling of 211221000230 in words is "two hundred eleven billion, two hundred twenty-one million, two hundred thirty", and thus it is an aban number.