10021001111 has 6 divisors (see below), whose sum is σ = 11014819536. Its totient is φ = 9110000900.

The previous prime is 10021001093. The next prime is 10021001149. The reversal of 10021001111 is 11110012001.

It is a happy number.

It is not a de Polignac number, because 10021001111 - 2³⁰ = 8947259287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10021091111) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 41408975 + ... + 41409216.

It is an arithmetic number, because the mean of its divisors is an integer number (1835803256).

Almost surely, 2^10021001111 is an apocalyptic number.

10021001111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

10021001111 is a deficient number, since it is larger than the sum of its proper divisors (993818425).

10021001111 is an equidigital number, since it uses as much as digits as its factorization.

10021001111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82818213 (or 82818202 counting only the distinct ones).

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

Adding to 10021001111 its reverse (11110012001), we get a palindrome (21131013112).

The spelling of 10021001111 in words is "ten billion, twenty-one million, one thousand, one hundred eleven".