12201011311 has 4 divisors (see below), whose sum is σ = 12206854000. Its totient is φ = 12195168624.

The previous prime is 12201011309. The next prime is 12201011327. The reversal of 12201011311 is 11311010221.

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 12201011311 - 2¹ = 12201011309 is a prime.

It is a super-2 number, since 2×12201011311² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12201011291 and 12201011300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12201011351) 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, 2918211 + ... + 2922388.

It is an arithmetic number, because the mean of its divisors is an integer number (3051713500).

Almost surely, 2^12201011311 is an apocalyptic number.

12201011311 is a deficient number, since it is larger than the sum of its proper divisors (5842689).

12201011311 is an equidigital number, since it uses as much as digits as its factorization.

12201011311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5842688.

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

Adding to 12201011311 its reverse (11311010221), we get a palindrome (23512021532).

The spelling of 12201011311 in words is "twelve billion, two hundred one million, eleven thousand, three hundred eleven".