2121121232999 has 2 divisors, whose sum is σ = 2121121233000. Its totient is φ = 2121121232998.

The previous prime is 2121121232983. The next prime is 2121121233071. The reversal of 2121121232999 is 9992321211212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2121121232999 - 2⁴ = 2121121232983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2121121232959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060560616499 + 1060560616500.

It is an arithmetic number, because the mean of its divisors is an integer number (1060560616500).

Almost surely, 2^{2121121232999} is an apocalyptic number.

2121121232999 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121121232999 is an equidigital number, since it uses as much as digits as its factorization.

2121121232999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69984, while the sum is 44.

The spelling of 2121121232999 in words is "two trillion, one hundred twenty-one billion, one hundred twenty-one million, two hundred thirty-two thousand, nine hundred ninety-nine".