201111310105 has 32 divisors (see below), whose sum is σ = 275539138560. Its totient is φ = 139956295680.

The previous prime is 201111310097. The next prime is 201111310109. The reversal of 201111310105 is 501013111102.

It is a happy number.

It is not a de Polignac number, because 201111310105 - 2³ = 201111310097 is a prime.

It is a super-2 number, since 2×201111310105² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (201111310109) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1452409 + ... + 1584838.

It is an arithmetic number, because the mean of its divisors is an integer number (8610598080).

Almost surely, 2^201111310105 is an apocalyptic number.

It is an amenable number.

201111310105 is a deficient number, since it is larger than the sum of its proper divisors (74427828455).

201111310105 is a wasteful number, since it uses less digits than its factorization.

201111310105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3037329.

The product of its (nonzero) digits is 30, while the sum is 16.

Adding to 201111310105 its reverse (501013111102), we get a palindrome (702124421207).

The spelling of 201111310105 in words is "two hundred one billion, one hundred eleven million, three hundred ten thousand, one hundred five".