2121120958867 has 2 divisors, whose sum is σ = 2121120958868. Its totient is φ = 2121120958866.

The previous prime is 2121120958823. The next prime is 2121120958877. The reversal of 2121120958867 is 7688590211212.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2121120958867 is a prime.

It is not a weakly prime, because it can be changed into another prime (2121120958877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060560479433 + 1060560479434.

It is an arithmetic number, because the mean of its divisors is an integer number (1060560479434).

Almost surely, 2^{2121120958867} is an apocalyptic number.

2121120958867 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121120958867 is an equidigital number, since it uses as much as digits as its factorization.

2121120958867 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 967680, while the sum is 52.

The spelling of 2121120958867 in words is "two trillion, one hundred twenty-one billion, one hundred twenty million, nine hundred fifty-eight thousand, eight hundred sixty-seven".