12111221210210 has 16 divisors (see below), whose sum is σ = 21844597776192. Its totient is φ = 4834621906800.

The previous prime is 12111221210201. The next prime is 12111221210213. The reversal of 12111221210210 is 1201212211121.

It is not an unprimeable number, because it can be changed into a prime (12111221210213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1233317006 + ... + 1233326825.

It is an arithmetic number, because the mean of its divisors is an integer number (1365287361012).

Almost surely, 2^{12111221210210} is an apocalyptic number.

12111221210210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12111221210210 is a deficient number, since it is larger than the sum of its proper divisors (9733376565982).

12111221210210 is a wasteful number, since it uses less digits than its factorization.

12111221210210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2466644329.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 12111221210210 its reverse (1201212211121), we get a palindrome (13312433421331).

The spelling of 12111221210210 in words is "twelve trillion, one hundred eleven billion, two hundred twenty-one million, two hundred ten thousand, two hundred ten".