11112121210 has 8 divisors (see below), whose sum is σ = 20001818196. Its totient is φ = 4444848480.

The previous prime is 11112121201. The next prime is 11112121219. The reversal of 11112121210 is 1212121111.

It is a happy number.

11112121210 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11112121201) and next prime (11112121219).

It can be written as a sum of positive squares in 2 ways, for example, as 11085773521 + 26347689 = 105289^2 + 5133^2 .

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

It is not an unprimeable number, because it can be changed into a prime (11112121219) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 555606051 + ... + 555606070.

Almost surely, 2^11112121210 is an apocalyptic number.

11112121210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11112121210 is a deficient number, since it is larger than the sum of its proper divisors (8889696986).

11112121210 is a wasteful number, since it uses less digits than its factorization.

11112121210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111212128.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 11112121210 its reverse (1212121111), we get a palindrome (12324242321).

Subtracting from 11112121210 its reverse (1212121111), we obtain a palindrome (9900000099).

The spelling of 11112121210 in words is "eleven billion, one hundred twelve million, one hundred twenty-one thousand, two hundred ten".