2121312131227 has 2 divisors, whose sum is σ = 2121312131228. Its totient is φ = 2121312131226.

The previous prime is 2121312131203. The next prime is 2121312131261. The reversal of 2121312131227 is 7221312131212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2121312131227 - 2¹¹ = 2121312129179 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2121312131195 and 2121312131204.

It is not a weakly prime, because it can be changed into another prime (2121312131297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060656065613 + 1060656065614.

It is an arithmetic number, because the mean of its divisors is an integer number (1060656065614).

Almost surely, 2^{2121312131227} is an apocalyptic number.

2121312131227 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121312131227 is an equidigital number, since it uses as much as digits as its factorization.

2121312131227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2016, while the sum is 28.

Adding to 2121312131227 its reverse (7221312131212), we get a palindrome (9342624262439).

The spelling of 2121312131227 in words is "two trillion, one hundred twenty-one billion, three hundred twelve million, one hundred thirty-one thousand, two hundred twenty-seven".