211112111210 has 192 divisors, whose sum is σ = 513831112704. Its totient is φ = 60643065600.

The previous prime is 211112111191. The next prime is 211112111219. The reversal of 211112111210 is 12111211112.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is not an unprimeable number, because it can be changed into a prime (211112111219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 141971087 + ... + 141972573.

It is an arithmetic number, because the mean of its divisors is an integer number (2676203712).

Almost surely, 2^211112111210 is an apocalyptic number.

211112111210 is an abundant number, since it is smaller than the sum of its proper divisors (302719001494).

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

211112111210 is a wasteful number, since it uses less digits than its factorization.

211112111210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2629 (or 2616 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 211112111210 its reverse (12111211112), we get a palindrome (223223322322).

The spelling of 211112111210 in words is "two hundred eleven billion, one hundred twelve million, one hundred eleven thousand, two hundred ten".