200421434201 has 4 divisors (see below), whose sum is σ = 202367273472. Its totient is φ = 198475594932.

The previous prime is 200421434197. The next prime is 200421434219. The reversal of 200421434201 is 102434124002.

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 200421434201 - 2² = 200421434197 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (200421434221) 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, 972919481 + ... + 972919686.

It is an arithmetic number, because the mean of its divisors is an integer number (50591818368).

Almost surely, 2^200421434201 is an apocalyptic number.

It is an amenable number.

200421434201 is a deficient number, since it is larger than the sum of its proper divisors (1945839271).

200421434201 is a wasteful number, since it uses less digits than its factorization.

200421434201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1945839270.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 200421434201 its reverse (102434124002), we get a palindrome (302855558203).

The spelling of 200421434201 in words is "two hundred billion, four hundred twenty-one million, four hundred thirty-four thousand, two hundred one".