12131211022211 has 32 divisors (see below), whose sum is σ = 12651546988800. Its totient is φ = 11624300319744.

The previous prime is 12131211022207. The next prime is 12131211022243. The reversal of 12131211022211 is 11222011213121.

It is a cyclic number.

It is not a de Polignac number, because 12131211022211 - 2² = 12131211022207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12131211322211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 885935681 + ... + 885949373.

It is an arithmetic number, because the mean of its divisors is an integer number (395360843400).

Almost surely, 2^{12131211022211} is an apocalyptic number.

12131211022211 is a deficient number, since it is larger than the sum of its proper divisors (520335966589).

12131211022211 is a wasteful number, since it uses less digits than its factorization.

12131211022211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15695.

The product of its (nonzero) digits is 96, while the sum is 20.

Adding to 12131211022211 its reverse (11222011213121), we get a palindrome (23353222235332).

The spelling of 12131211022211 in words is "twelve trillion, one hundred thirty-one billion, two hundred eleven million, twenty-two thousand, two hundred eleven".