12321021131211 has 32 divisors (see below), whose sum is σ = 17747309099520. Its totient is φ = 7558381442304.

The previous prime is 12321021131189. The next prime is 12321021131219. The reversal of 12321021131211 is 11213112012321.

It is not a de Polignac number, because 12321021131211 - 2⁵ = 12321021131179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12321021131219) 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, 15469026 + ... + 16246008.

It is an arithmetic number, because the mean of its divisors is an integer number (554603409360).

Almost surely, 2^{12321021131211} is an apocalyptic number.

12321021131211 is a deficient number, since it is larger than the sum of its proper divisors (5426287968309).

12321021131211 is a wasteful number, since it uses less digits than its factorization.

12321021131211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 778275.

The product of its (nonzero) digits is 144, while the sum is 21.

Adding to 12321021131211 its reverse (11213112012321), we get a palindrome (23534133143532).

The spelling of 12321021131211 in words is "twelve trillion, three hundred twenty-one billion, twenty-one million, one hundred thirty-one thousand, two hundred eleven".