210111222012 has 24 divisors (see below), whose sum is σ = 503509776336. Its totient is φ = 68144179968.

The previous prime is 210111221981. The next prime is 210111222053. The reversal of 210111222012 is 210222111012.

It is a junction number, because it is equal to n+sod(n) for n = 210111221982 and 210111222000.

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, 236611293 + ... + 236612180.

It is an arithmetic number, because the mean of its divisors is an integer number (20979574014).

Almost surely, 2^210111222012 is an apocalyptic number.

It is an amenable number.

210111222012 is an abundant number, since it is smaller than the sum of its proper divisors (293398554324).

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

210111222012 is a wasteful number, since it uses less digits than its factorization.

210111222012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473223517 (or 473223515 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 210111222012 its reverse (210222111012), we get a palindrome (420333333024).

The spelling of 210111222012 in words is "two hundred ten billion, one hundred eleven million, two hundred twenty-two thousand, twelve".