2120001212123 has 8 divisors (see below), whose sum is σ = 2123641497600. Its totient is φ = 2116361264680.

The previous prime is 2120001212083. The next prime is 2120001212129. The reversal of 2120001212123 is 3212121000212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2120001212123 - 2³⁰ = 2118927470299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2120001212129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14670086 + ... + 14813892.

It is an arithmetic number, because the mean of its divisors is an integer number (265455187200).

Almost surely, 2^{2120001212123} is an apocalyptic number.

2120001212123 is a deficient number, since it is larger than the sum of its proper divisors (3640285477).

2120001212123 is a wasteful number, since it uses less digits than its factorization.

2120001212123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169017.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 2120001212123 its reverse (3212121000212), we get a palindrome (5332122212335).

The spelling of 2120001212123 in words is "two trillion, one hundred twenty billion, one million, two hundred twelve thousand, one hundred twenty-three".