11212111110 has 64 divisors (see below), whose sum is σ = 28279164672. Its totient is φ = 2841422976.

The previous prime is 11212111087. The next prime is 11212111123. The reversal of 11212111110 is 1111121211.

It is a super-2 number, since 2×11212111110² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 69724 + ... + 165183.

It is an arithmetic number, because the mean of its divisors is an integer number (441861948).

Almost surely, 2^11212111110 is an apocalyptic number.

11212111110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11212111110 is an abundant number, since it is smaller than the sum of its proper divisors (17067053562).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11212111110 is a wasteful number, since it uses less digits than its factorization.

11212111110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234997.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 11212111110 its reverse (1111121211), we get a palindrome (12323232321).

The spelling of 11212111110 in words is "eleven billion, two hundred twelve million, one hundred eleven thousand, one hundred ten".