2121123302999 has 4 divisors (see below), whose sum is σ = 2122118670360. Its totient is φ = 2120127935640.

The previous prime is 2121123302981. The next prime is 2121123303007. The reversal of 2121123302999 is 9992033211212.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2121123302999 - 2¹⁶ = 2121123237463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121123302959) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 497680484 + ... + 497684745.

It is an arithmetic number, because the mean of its divisors is an integer number (530529667590).

Almost surely, 2^{2121123302999} is an apocalyptic number.

2121123302999 is a deficient number, since it is larger than the sum of its proper divisors (995367361).

2121123302999 is an equidigital number, since it uses as much as digits as its factorization.

2121123302999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 995367360.

The product of its (nonzero) digits is 104976, while the sum is 44.

The spelling of 2121123302999 in words is "two trillion, one hundred twenty-one billion, one hundred twenty-three million, three hundred two thousand, nine hundred ninety-nine".