10201011111 has 24 divisors (see below), whose sum is σ = 15289090544. Its totient is φ = 6548636160.

The previous prime is 10201011097. The next prime is 10201011173. The reversal of 10201011111 is 11111010201.

It is not a de Polignac number, because 10201011111 - 2⁶ = 10201011047 is a prime.

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

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10201011093 and 10201011102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10201011811) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 125605 + ... + 190206.

Almost surely, 2^10201011111 is an apocalyptic number.

10201011111 is a deficient number, since it is larger than the sum of its proper divisors (5088079433).

10201011111 is a wasteful number, since it uses less digits than its factorization.

10201011111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315951 (or 315948 counting only the distinct ones).

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

Adding to 10201011111 its reverse (11111010201), we get a palindrome (21312021312).

The spelling of 10201011111 in words is "ten billion, two hundred one million, eleven thousand, one hundred eleven".