12111332101 has 4 divisors (see below), whose sum is σ = 13212362304. Its totient is φ = 11010301900.

The previous prime is 12111332041. The next prime is 12111332119. The reversal of 12111332101 is 10123311121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12111332101 - 2¹³ = 12111323909 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 (12111332161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 550515085 + ... + 550515106.

It is an arithmetic number, because the mean of its divisors is an integer number (3303090576).

Almost surely, 2^12111332101 is an apocalyptic number.

12111332101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12111332101 is a deficient number, since it is larger than the sum of its proper divisors (1101030203).

12111332101 is a wasteful number, since it uses less digits than its factorization.

12111332101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1101030202.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 12111332101 its reverse (10123311121), we get a palindrome (22234643222).

The spelling of 12111332101 in words is "twelve billion, one hundred eleven million, three hundred thirty-two thousand, one hundred one".