121210084445893 has 2 divisors, whose sum is σ = 121210084445894. Its totient is φ = 121210084445892.

The previous prime is 121210084445803. The next prime is 121210084445929. The reversal of 121210084445893 is 398544480012121.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119749752378529 + 1460332067364 = 10943023^2 + 1208442^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121210084445893 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121210084445893.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121210084445803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60605042222946 + 60605042222947.

It is an arithmetic number, because the mean of its divisors is an integer number (60605042222947).

Almost surely, 2^{121210084445893} is an apocalyptic number.

It is an amenable number.

121210084445893 is a deficient number, since it is larger than the sum of its proper divisors (1).

121210084445893 is an equidigital number, since it uses as much as digits as its factorization.

121210084445893 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2211840, while the sum is 52.

The spelling of 121210084445893 in words is "one hundred twenty-one trillion, two hundred ten billion, eighty-four million, four hundred forty-five thousand, eight hundred ninety-three".