10011112020 has 288 divisors, whose sum is σ = 39001277952. Its totient is φ = 2020322304.

The previous prime is 10011112003. The next prime is 10011112039. The reversal of 10011112020 is 2021111001.

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 = 10011111993 and 10011112011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 363454 + ... + 390026.

It is an arithmetic number, because the mean of its divisors is an integer number (135421104).

Almost surely, 2^10011112020 is an apocalyptic number.

10011112020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10011112020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19500638976).

10011112020 is an abundant number, since it is smaller than the sum of its proper divisors (28990165932).

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

10011112020 is a wasteful number, since it uses less digits than its factorization.

10011112020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26631 (or 26626 counting only the distinct ones).

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

Adding to 10011112020 its reverse (2021111001), we get a palindrome (12032223021).

The spelling of 10011112020 in words is "ten billion, eleven million, one hundred twelve thousand, twenty".