2104350142121 has 4 divisors (see below), whose sum is σ = 2105037616644. Its totient is φ = 2103662667600.

The previous prime is 2104350142067. The next prime is 2104350142201. The reversal of 2104350142121 is 1212410534012.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1498188240025 + 606161902096 = 1224005^2 + 778564^2 .

It is a cyclic number.

It is not a de Polignac number, because 2104350142121 - 2³⁴ = 2087170272937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2104350142621) 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, 343732670 + ... + 343738791.

It is an arithmetic number, because the mean of its divisors is an integer number (526259404161).

Almost surely, 2^{2104350142121} is an apocalyptic number.

It is an amenable number.

2104350142121 is a deficient number, since it is larger than the sum of its proper divisors (687474523).

2104350142121 is an equidigital number, since it uses as much as digits as its factorization.

2104350142121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687474522.

The product of its (nonzero) digits is 1920, while the sum is 26.

Adding to 2104350142121 its reverse (1212410534012), we get a palindrome (3316760676133).

The spelling of 2104350142121 in words is "two trillion, one hundred four billion, three hundred fifty million, one hundred forty-two thousand, one hundred twenty-one".