2121321212299 has 2 divisors, whose sum is σ = 2121321212300. Its totient is φ = 2121321212298.

The previous prime is 2121321212287. The next prime is 2121321212333. The reversal of 2121321212299 is 9922121231212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2121321212299 - 2⁵ = 2121321212267 is a prime.

It is not a weakly prime, because it can be changed into another prime (2121321212209) 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, 1060660606149 + 1060660606150.

It is an arithmetic number, because the mean of its divisors is an integer number (1060660606150).

Almost surely, 2^{2121321212299} is an apocalyptic number.

2121321212299 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121321212299 is an equidigital number, since it uses as much as digits as its factorization.

2121321212299 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15552, while the sum is 37.

The spelling of 2121321212299 in words is "two trillion, one hundred twenty-one billion, three hundred twenty-one million, two hundred twelve thousand, two hundred ninety-nine".