11111110010020 has 12 divisors (see below), whose sum is σ = 23333331021084. Its totient is φ = 4444444004000.

The previous prime is 11111110009921. The next prime is 11111110010051. The reversal of 11111110010020 is 2001001111111.

It can be written as a sum of positive squares in 2 ways, for example, as 1752356422756 + 9358753587264 = 1323766^2 + 3059208^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 11111110009979 and 11111110010006.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 277777750231 + ... + 277777750270.

It is an arithmetic number, because the mean of its divisors is an integer number (1944444251757).

Almost surely, 2^{11111110010020} is an apocalyptic number.

11111110010020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11111110010020 is an abundant number, since it is smaller than the sum of its proper divisors (12222221011064).

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

11111110010020 is a wasteful number, since it uses less digits than its factorization.

11111110010020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555555500510 (or 555555500508 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 10.

Adding to 11111110010020 its reverse (2001001111111), we get a palindrome (13112111121131).

The spelling of 11111110010020 in words is "eleven trillion, one hundred eleven billion, one hundred ten million, ten thousand, twenty".