11111221210210 has 16 divisors (see below), whose sum is σ = 21818398012992. Its totient is φ = 4040444076400.

The previous prime is 11111221210139. The next prime is 11111221210253. The reversal of 11111221210210 is 1201212211111.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 50505550846 + ... + 50505551065.

It is an arithmetic number, because the mean of its divisors is an integer number (1363649875812).

Almost surely, 2^{11111221210210} is an apocalyptic number.

11111221210210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11111221210210 is a deficient number, since it is larger than the sum of its proper divisors (10707176802782).

11111221210210 is a wasteful number, since it uses less digits than its factorization.

11111221210210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101011101929.

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

Adding to 11111221210210 its reverse (1201212211111), we get a palindrome (12312433421321).

The spelling of 11111221210210 in words is "eleven trillion, one hundred eleven billion, two hundred twenty-one million, two hundred ten thousand, two hundred ten".