2000123121121 has 4 divisors (see below), whose sum is σ = 2000130527232. Its totient is φ = 2000115715012.

The previous prime is 2000123121091. The next prime is 2000123121133. The reversal of 2000123121121 is 1211213210002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2000123121121 - 2¹³ = 2000123112929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2000123121095 and 2000123121104.

It is not an unprimeable number, because it can be changed into a prime (2000123131121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3282001 + ... + 3843406.

It is an arithmetic number, because the mean of its divisors is an integer number (500032631808).

Almost surely, 2^{2000123121121} is an apocalyptic number.

It is an amenable number.

2000123121121 is a deficient number, since it is larger than the sum of its proper divisors (7406111).

2000123121121 is an equidigital number, since it uses as much as digits as its factorization.

2000123121121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7406110.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 2000123121121 its reverse (1211213210002), we get a palindrome (3211336331123).

The spelling of 2000123121121 in words is "two trillion, one hundred twenty-three million, one hundred twenty-one thousand, one hundred twenty-one".