111210121010 has 16 divisors (see below), whose sum is σ = 203955166296. Its totient is φ = 43644726528.

The previous prime is 111210120949. The next prime is 111210121027. The reversal of 111210121010 is 10121012111.

It can be written as a sum of positive squares in 4 ways, for example, as 104017215289 + 7192905721 = 322517^2 + 84811^2 .

It is a junction number, because it is equal to n+sod(n) for n = 111210120982 and 111210121000.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 104914679 + ... + 104915738.

Almost surely, 2^111210121010 is an apocalyptic number.

111210121010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111210121010 is a deficient number, since it is larger than the sum of its proper divisors (92745045286).

111210121010 is a wasteful number, since it uses less digits than its factorization.

111210121010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209830477.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 111210121010 its reverse (10121012111), we get a palindrome (121331133121).

The spelling of 111210121010 in words is "one hundred eleven billion, two hundred ten million, one hundred twenty-one thousand, ten".