11112112211020 has 48 divisors (see below), whose sum is σ = 23742788535648. Its totient is φ = 4367584742400.

The previous prime is 11112112211009. The next prime is 11112112211021. The reversal of 11112112211020 is 2011221121111.

It is a junction number, because it is equal to n+sod(n) for n = 11112112210985 and 11112112211003.

It is not an unprimeable number, because it can be changed into a prime (11112112211021) 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 15 ways as a sum of consecutive naturals, for example, 9802587 + ... + 10877266.

It is an arithmetic number, because the mean of its divisors is an integer number (494641427826).

Almost surely, 2^{11112112211020} is an apocalyptic number.

11112112211020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11112112211020 is an abundant number, since it is smaller than the sum of its proper divisors (12630676324628).

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

11112112211020 is a wasteful number, since it uses less digits than its factorization.

11112112211020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20680330 (or 20680328 counting only the distinct ones).

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

Adding to 11112112211020 its reverse (2011221121111), we get a palindrome (13123333332131).

The spelling of 11112112211020 in words is "eleven trillion, one hundred twelve billion, one hundred twelve million, two hundred eleven thousand, twenty".