200220043421 has 16 divisors (see below), whose sum is σ = 213576264000. Its totient is φ = 187044253440.

The previous prime is 200220043411. The next prime is 200220043459. The reversal of 200220043421 is 124340022002.

It is a cyclic number.

It is not a de Polignac number, because 200220043421 - 2¹⁸ = 200219781277 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 200220043393 and 200220043402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200220043411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1198955 + ... + 1355703.

It is an arithmetic number, because the mean of its divisors is an integer number (13348516500).

Almost surely, 2^200220043421 is an apocalyptic number.

It is an amenable number.

200220043421 is a deficient number, since it is larger than the sum of its proper divisors (13356220579).

200220043421 is a wasteful number, since it uses less digits than its factorization.

200220043421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157324.

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 200220043421 its reverse (124340022002), we get a palindrome (324560065423).

The spelling of 200220043421 in words is "two hundred billion, two hundred twenty million, forty-three thousand, four hundred twenty-one".