12120201100111 has 4 divisors (see below), whose sum is σ = 13052524261672. Its totient is φ = 11187877938552.

The previous prime is 12120201100067. The next prime is 12120201100141. The reversal of 12120201100111 is 11100110202121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12120201100111 - 2¹⁹ = 12120200575823 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 932323161547 = 12120201100111 / (1 + 2 + 1 + 2 + 0 + 2 + 0 + 1 + 1 + 0 + 0 + 1 + 1 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12120201100091 and 12120201100100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12120201100141) 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, 466161580761 + ... + 466161580786.

It is an arithmetic number, because the mean of its divisors is an integer number (3263131065418).

Almost surely, 2^{12120201100111} is an apocalyptic number.

12120201100111 is a deficient number, since it is larger than the sum of its proper divisors (932323161561).

12120201100111 is an equidigital number, since it uses as much as digits as its factorization.

12120201100111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 932323161560.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 12120201100111 its reverse (11100110202121), we get a palindrome (23220311302232).

The spelling of 12120201100111 in words is "twelve trillion, one hundred twenty billion, two hundred one million, one hundred thousand, one hundred eleven".