12111321101 has 16 divisors (see below), whose sum is σ = 14287207680. Its totient is φ = 10142138880.

The previous prime is 12111321097. The next prime is 12111321113. The reversal of 12111321101 is 10112311121.

It is a cyclic number.

It is not a de Polignac number, because 12111321101 - 2² = 12111321097 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 (12111321121) 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, 680216 + ... + 697793.

It is an arithmetic number, because the mean of its divisors is an integer number (892950480).

Almost surely, 2^12111321101 is an apocalyptic number.

12111321101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12111321101 is a deficient number, since it is larger than the sum of its proper divisors (2175886579).

12111321101 is a wasteful number, since it uses less digits than its factorization.

12111321101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1378084.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 12111321101 its reverse (10112311121), we get a palindrome (22223632222).

The spelling of 12111321101 in words is "twelve billion, one hundred eleven million, three hundred twenty-one thousand, one hundred one".