12011201311 has 8 divisors (see below), whose sum is σ = 12066134400. Its totient is φ = 11956385688.

The previous prime is 12011201303. The next prime is 12011201351. The reversal of 12011201311 is 11310211021.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12011201311 - 2³ = 12011201303 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12011201291 and 12011201300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011201351) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 178960 + ... + 236746.

It is an arithmetic number, because the mean of its divisors is an integer number (1508266800).

Almost surely, 2^12011201311 is an apocalyptic number.

12011201311 is a deficient number, since it is larger than the sum of its proper divisors (54933089).

12011201311 is an equidigital number, since it uses as much as digits as its factorization.

12011201311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58733.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 12011201311 its reverse (11310211021), we get a palindrome (23321412332).

The spelling of 12011201311 in words is "twelve billion, eleven million, two hundred one thousand, three hundred eleven".