200412515421 has 12 divisors (see below), whose sum is σ = 302071038048. Its totient is φ = 127799285064.

The previous prime is 200412515417. The next prime is 200412515447. The reversal of 200412515421 is 124515214002.

It is a happy number.

200412515421 is a `hidden beast` number, since 200 + 4 + 1 + 25 + 15 + 421 = 666.

It is not a de Polignac number, because 200412515421 - 2² = 200412515417 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200412515491) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 484087995 + ... + 484088408.

It is an arithmetic number, because the mean of its divisors is an integer number (25172586504).

Almost surely, 2^200412515421 is an apocalyptic number.

It is an amenable number.

200412515421 is a deficient number, since it is larger than the sum of its proper divisors (101658522627).

200412515421 is a wasteful number, since it uses less digits than its factorization.

200412515421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 968176432 (or 968176429 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

Adding to 200412515421 its reverse (124515214002), we get a palindrome (324927729423).

The spelling of 200412515421 in words is "two hundred billion, four hundred twelve million, five hundred fifteen thousand, four hundred twenty-one".