2121300031267 has 2 divisors, whose sum is σ = 2121300031268. Its totient is φ = 2121300031266.

The previous prime is 2121300031261. The next prime is 2121300031271. The reversal of 2121300031267 is 7621300031212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2121300031267 - 2⁷ = 2121300031139 is a prime.

It is not a weakly prime, because it can be changed into another prime (2121300031261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060650015633 + 1060650015634.

It is an arithmetic number, because the mean of its divisors is an integer number (1060650015634).

Almost surely, 2^{2121300031267} is an apocalyptic number.

2121300031267 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121300031267 is an equidigital number, since it uses as much as digits as its factorization.

2121300031267 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 28.

Adding to 2121300031267 its reverse (7621300031212), we get a palindrome (9742600062479).

Subtracting 2121300031267 from its reverse (7621300031212), we obtain a palindrome (5499999999945).

The spelling of 2121300031267 in words is "two trillion, one hundred twenty-one billion, three hundred million, thirty-one thousand, two hundred sixty-seven".