10011111020 has 24 divisors (see below), whose sum is σ = 22129825200. Its totient is φ = 3793684032.

The previous prime is 10011110971. The next prime is 10011111023. The reversal of 10011111020 is 2011111001.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 10011110989 and 10011111007.

It is not an unprimeable number, because it can be changed into a prime (10011111023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13172135 + ... + 13172894.

It is an arithmetic number, because the mean of its divisors is an integer number (922076050).

Almost surely, 2^10011111020 is an apocalyptic number.

10011111020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10011111020 is an abundant number, since it is smaller than the sum of its proper divisors (12118714180).

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

10011111020 is a wasteful number, since it uses less digits than its factorization.

10011111020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26345057 (or 26345055 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 10011111020 its reverse (2011111001), we get a palindrome (12022222021).

The spelling of 10011111020 in words is "ten billion, eleven million, one hundred eleven thousand, twenty".