11110012020 has 72 divisors (see below), whose sum is σ = 33720184680. Its totient is φ = 2960928000.

The previous prime is 11110012009. The next prime is 11110012031. The reversal of 11110012020 is 2021001111.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (11110012009) and next prime (11110012031).

It can be written as a sum of positive squares in 4 ways, for example, as 3868342416 + 7241669604 = 62196^2 + 85098^2 .

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 = 11110011993 and 11110012011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 304770 + ... + 339270.

Almost surely, 2^11110012020 is an apocalyptic number.

11110012020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11110012020 is an abundant number, since it is smaller than the sum of its proper divisors (22610172660).

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

11110012020 is a wasteful number, since it uses less digits than its factorization.

11110012020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36305 (or 36300 counting only the distinct ones).

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

Adding to 11110012020 its reverse (2021001111), we get a palindrome (13131013131).

The spelling of 11110012020 in words is "eleven billion, one hundred ten million, twelve thousand, twenty".