10111011021 has 24 divisors (see below), whose sum is σ = 14765768160. Its totient is φ = 6666605856.

The previous prime is 10111010993. The next prime is 10111011047. The reversal of 10111011021 is 12011011101.

10111011021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10111011021 - 2⁵ = 10111010989 is a prime.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 10111010994 and 10111011012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10111011091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 543150 + ... + 561456.

It is an arithmetic number, because the mean of its divisors is an integer number (615240340).

Almost surely, 2^10111011021 is an apocalyptic number.

It is an amenable number.

10111011021 is a deficient number, since it is larger than the sum of its proper divisors (4654757139).

10111011021 is a wasteful number, since it uses less digits than its factorization.

10111011021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18985 (or 18982 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 10111011021 its reverse (12011011101), we get a palindrome (22122022122).

The spelling of 10111011021 in words is "ten billion, one hundred eleven million, eleven thousand, twenty-one".