111221002210 has 16 divisors (see below), whose sum is σ = 200202208056. Its totient is φ = 44487422208.

The previous prime is 111221002201. The next prime is 111221002213. The reversal of 111221002210 is 12200122111.

It can be written as a sum of positive squares in 4 ways, for example, as 44123943249 + 67097058961 = 210057^2 + 259031^2 .

It is a super-2 number, since 2×111221002210² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (111221002213) 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, 511204 + ... + 695536.

Almost surely, 2^111221002210 is an apocalyptic number.

111221002210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111221002210 is a deficient number, since it is larger than the sum of its proper divisors (88981205846).

111221002210 is a wasteful number, since it uses less digits than its factorization.

111221002210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244677.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 111221002210 its reverse (12200122111), we get a palindrome (123421124321).

The spelling of 111221002210 in words is "one hundred eleven billion, two hundred twenty-one million, two thousand, two hundred ten".