211222111210 has 64 divisors (see below), whose sum is σ = 428226269184. Its totient is φ = 74344435200.

The previous prime is 211222111193. The next prime is 211222111211. The reversal of 211222111210 is 12111222112.

It is a super-2 number, since 2×211222111210² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211222111211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 388384 + ... + 757156.

It is an arithmetic number, because the mean of its divisors is an integer number (6691035456).

Almost surely, 2^211222111210 is an apocalyptic number.

211222111210 is an abundant number, since it is smaller than the sum of its proper divisors (217004157974).

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

211222111210 is a wasteful number, since it uses less digits than its factorization.

211222111210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368959.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 211222111210 its reverse (12111222112), we get a palindrome (223333333322).

The spelling of 211222111210 in words is "two hundred eleven billion, two hundred twenty-two million, one hundred eleven thousand, two hundred ten".