2121131311127 has 2 divisors, whose sum is σ = 2121131311128. Its totient is φ = 2121131311126.

The previous prime is 2121131311097. The next prime is 2121131311133. The reversal of 2121131311127 is 7211131311212.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2121131311127 - 2⁴⁰ = 1021619683351 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2121131311096 and 2121131311105.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2121131311177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060565655563 + 1060565655564.

It is an arithmetic number, because the mean of its divisors is an integer number (1060565655564).

Almost surely, 2^{2121131311127} is an apocalyptic number.

2121131311127 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121131311127 is an equidigital number, since it uses as much as digits as its factorization.

2121131311127 is an evil number, because the sum of its binary digits is even.

The product of its digits is 504, while the sum is 26.

Adding to 2121131311127 its reverse (7211131311212), we get a palindrome (9332262622339).

The spelling of 2121131311127 in words is "two trillion, one hundred twenty-one billion, one hundred thirty-one million, three hundred eleven thousand, one hundred twenty-seven".