211223002230205 has 24 divisors (see below), whose sum is σ = 292409826403968. Its totient is φ = 143484997771488.

The previous prime is 211223002230157. The next prime is 211223002230211. The reversal of 211223002230205 is 502032200322112.

It is not a de Polignac number, because 211223002230205 - 2²¹ = 211223000133053 is a prime.

It is a super-2 number, since 2×211223002230205² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 211223002230205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 263156929 + ... + 263958358.

It is an arithmetic number, because the mean of its divisors is an integer number (12183742766832).

Almost surely, 2^{211223002230205} is an apocalyptic number.

It is an amenable number.

211223002230205 is a deficient number, since it is larger than the sum of its proper divisors (81186824173763).

211223002230205 is an equidigital number, since it uses as much as digits as its factorization.

211223002230205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527115513 (or 527115406 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 211223002230205 its reverse (502032200322112), we get a palindrome (713255202552317).

The spelling of 211223002230205 in words is "two hundred eleven trillion, two hundred twenty-three billion, two million, two hundred thirty thousand, two hundred five".