11112212121110 has 64 divisors (see below), whose sum is σ = 20668917795840. Its totient is φ = 4299110688000.

The previous prime is 11112212121107. The next prime is 11112212121113. The reversal of 11112212121110 is 1112121221111.

It is an interprime number because it is at equal distance from previous prime (11112212121107) and next prime (11112212121113).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11112212121113) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20298485 + ... + 20838735.

It is an arithmetic number, because the mean of its divisors is an integer number (322951840560).

Almost surely, 2^{11112212121110} is an apocalyptic number.

11112212121110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11112212121110 is a deficient number, since it is larger than the sum of its proper divisors (9556705674730).

11112212121110 is a wasteful number, since it uses less digits than its factorization.

11112212121110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540821.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 11112212121110 its reverse (1112121221111), we get a palindrome (12224333342221).

It can be divided in two parts, 111 and 12212121110, that added together give a palindrome (12212121221).

The spelling of 11112212121110 in words is "eleven trillion, one hundred twelve billion, two hundred twelve million, one hundred twenty-one thousand, one hundred ten".