211223223210 has 16 divisors (see below), whose sum is σ = 506935735776. Its totient is φ = 56326192848.

The previous prime is 211223223179. The next prime is 211223223247. The reversal of 211223223210 is 12322322112.

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, 3520387024 + ... + 3520387083.

It is an arithmetic number, because the mean of its divisors is an integer number (31683483486).

Almost surely, 2^211223223210 is an apocalyptic number.

211223223210 is an abundant number, since it is smaller than the sum of its proper divisors (295712512566).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211223223210 is a wasteful number, since it uses less digits than its factorization.

211223223210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7040774117.

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

Adding to 211223223210 its reverse (12322322112), we get a palindrome (223545545322).

The spelling of 211223223210 in words is "two hundred eleven billion, two hundred twenty-three million, two hundred twenty-three thousand, two hundred ten".