12111330101 has 16 divisors (see below), whose sum is σ = 13147296624. Its totient is φ = 11090601984.

The previous prime is 12111330097. The next prime is 12111330103. The reversal of 12111330101 is 10103311121.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 587092900 + 11524237201 = 24230^2 + 107351^2 .

It is not a de Polignac number, because 12111330101 - 2² = 12111330097 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 (12111330103) 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, 897335 + ... + 910731.

It is an arithmetic number, because the mean of its divisors is an integer number (821706039).

Almost surely, 2^12111330101 is an apocalyptic number.

It is an amenable number.

12111330101 is a deficient number, since it is larger than the sum of its proper divisors (1035966523).

12111330101 is a wasteful number, since it uses less digits than its factorization.

12111330101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13960.

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 12111330101 its reverse (10103311121), we get a palindrome (22214641222).

The spelling of 12111330101 in words is "twelve billion, one hundred eleven million, three hundred thirty thousand, one hundred one".