2120002121123 has 4 divisors (see below), whose sum is σ = 2165108549280. Its totient is φ = 2074895692968.

The previous prime is 2120002121117. The next prime is 2120002121129. The reversal of 2120002121123 is 3211212000212.

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

It is an interprime number because it is at equal distance from previous prime (2120002121117) and next prime (2120002121129).

It is a cyclic number.

It is not a de Polignac number, because 2120002121123 - 2¹² = 2120002117027 is a prime.

It is a super-2 number, since 2×2120002121123² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2120002121129) 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, 22553214008 + ... + 22553214101.

It is an arithmetic number, because the mean of its divisors is an integer number (541277137320).

Almost surely, 2^{2120002121123} is an apocalyptic number.

2120002121123 is a deficient number, since it is larger than the sum of its proper divisors (45106428157).

2120002121123 is an equidigital number, since it uses as much as digits as its factorization.

2120002121123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45106428156.

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

Adding to 2120002121123 its reverse (3211212000212), we get a palindrome (5331214121335).

The spelling of 2120002121123 in words is "two trillion, one hundred twenty billion, two million, one hundred twenty-one thousand, one hundred twenty-three".