201101012111 has 16 divisors (see below), whose sum is σ = 208407427200. Its totient is φ = 193819761408.

The previous prime is 201101012041. The next prime is 201101012153. The reversal of 201101012111 is 111210101102.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201101012111 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201101012092 and 201101012101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201101012171) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51312410 + ... + 51316328.

It is an arithmetic number, because the mean of its divisors is an integer number (13025464200).

Almost surely, 2^201101012111 is an apocalyptic number.

201101012111 is a deficient number, since it is larger than the sum of its proper divisors (7306415089).

201101012111 is a wasteful number, since it uses less digits than its factorization.

201101012111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6658.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 201101012111 its reverse (111210101102), we get a palindrome (312311113213).

The spelling of 201101012111 in words is "two hundred one billion, one hundred one million, twelve thousand, one hundred eleven".