200000013421 has 4 divisors (see below), whose sum is σ = 215384629852. Its totient is φ = 184615396992.

The previous prime is 200000013401. The next prime is 200000013431. The reversal of 200000013421 is 124310000002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 124310000002 = 2 ⋅62155000001.

It can be written as a sum of positive squares in 2 ways, for example, as 53321737225 + 146678276196 = 230915^2 + 382986^2 .

It is not a de Polignac number, because 200000013421 - 2¹⁷ = 199999882349 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 15384616417 = 200000013421 / (2 + 0 + 0 + 0 + 0 + 0 + 0 + 1 + 3 + 4 + 2 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200000013401) 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, 7692308196 + ... + 7692308221.

It is an arithmetic number, because the mean of its divisors is an integer number (53846157463).

Almost surely, 2^200000013421 is an apocalyptic number.

It is an amenable number.

200000013421 is a deficient number, since it is larger than the sum of its proper divisors (15384616431).

200000013421 is a wasteful number, since it uses less digits than its factorization.

200000013421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15384616430.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 200000013421 its reverse (124310000002), we get a palindrome (324310013423).

The spelling of 200000013421 in words is "two hundred billion, thirteen thousand, four hundred twenty-one".