2000013123421 has 4 divisors (see below), whose sum is σ = 2000024161344. Its totient is φ = 2000002085500.

The previous prime is 2000013123389. The next prime is 2000013123443. The reversal of 2000013123421 is 1243213100002.

It is a happy number.

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 2000013123421 - 2⁵ = 2000013123389 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 (2000013523421) 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, 5242555 + ... + 5611096.

It is an arithmetic number, because the mean of its divisors is an integer number (500006040336).

Almost surely, 2^{2000013123421} is an apocalyptic number.

It is an amenable number.

2000013123421 is a deficient number, since it is larger than the sum of its proper divisors (11037923).

2000013123421 is a wasteful number, since it uses less digits than its factorization.

2000013123421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11037922.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 2000013123421 its reverse (1243213100002), we get a palindrome (3243226223423).

The spelling of 2000013123421 in words is "two trillion, thirteen million, one hundred twenty-three thousand, four hundred twenty-one".