212111221203 has 48 divisors (see below), whose sum is σ = 370820975616. Its totient is φ = 114054485760.

The previous prime is 212111221183. The next prime is 212111221211. The reversal of 212111221203 is 302122111212.

It is not a de Polignac number, because 212111221203 - 2⁹ = 212111220691 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212111221303) 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 47 ways as a sum of consecutive naturals, for example, 6550150 + ... + 6582452.

It is an arithmetic number, because the mean of its divisors is an integer number (7725436992).

Almost surely, 2^212111221203 is an apocalyptic number.

212111221203 is a deficient number, since it is larger than the sum of its proper divisors (158709754413).

212111221203 is a wasteful number, since it uses less digits than its factorization.

212111221203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38464 (or 38461 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 212111221203 its reverse (302122111212), we get a palindrome (514233332415).

The spelling of 212111221203 in words is "two hundred twelve billion, one hundred eleven million, two hundred twenty-one thousand, two hundred three".