11110021020 has 96 divisors (see below), whose sum is σ = 39502310400. Its totient is φ = 2539432512.

The previous prime is 11110021009. The next prime is 11110021061. The reversal of 11110021020 is 2012001111.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 11110020993 and 11110021011.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1465800 + ... + 1473359.

It is an arithmetic number, because the mean of its divisors is an integer number (411482400).

Almost surely, 2^11110021020 is an apocalyptic number.

11110021020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11110021020 is an abundant number, since it is smaller than the sum of its proper divisors (28392289380).

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

11110021020 is a wasteful number, since it uses less digits than its factorization.

11110021020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2939184 (or 2939176 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 11110021020 its reverse (2012001111), we get a palindrome (13122022131).

The spelling of 11110021020 in words is "eleven billion, one hundred ten million, twenty-one thousand, twenty".