111222100810 has 8 divisors (see below), whose sum is σ = 200199781476. Its totient is φ = 44488840320.

The previous prime is 111222100783. The next prime is 111222100811. The reversal of 111222100810 is 18001222111.

It can be written as a sum of positive squares in 2 ways, for example, as 103222766089 + 7999334721 = 321283^2 + 89439^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×111222100810² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (111222100811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5561105031 + ... + 5561105050.

Almost surely, 2^111222100810 is an apocalyptic number.

111222100810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111222100810 is a deficient number, since it is larger than the sum of its proper divisors (88977680666).

111222100810 is a wasteful number, since it uses less digits than its factorization.

111222100810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11122210088.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 111222100810 its reverse (18001222111), we get a palindrome (129223322921).

The spelling of 111222100810 in words is "one hundred eleven billion, two hundred twenty-two million, one hundred thousand, eight hundred ten".