11112220111020 has 96 divisors (see below), whose sum is σ = 35559972489216. Its totient is φ = 2539874016000.

The previous prime is 11112220110991. The next prime is 11112220111033. The reversal of 11112220111020 is 2011102221111.

It is a happy number.

11112220111020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×11112220111020² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

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, 18158430 + ... + 18760410.

It is an arithmetic number, because the mean of its divisors is an integer number (370416380096).

Almost surely, 2^{11112220111020} is an apocalyptic number.

11112220111020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11112220111020 is an abundant number, since it is smaller than the sum of its proper divisors (24447752378196).

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

11112220111020 is a wasteful number, since it uses less digits than its factorization.

11112220111020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645951 (or 645949 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 11112220111020 its reverse (2011102221111), we get a palindrome (13123322332131).

The spelling of 11112220111020 in words is "eleven trillion, one hundred twelve billion, two hundred twenty million, one hundred eleven thousand, twenty".