204300012400421 has 16 divisors (see below), whose sum is σ = 234796976524800. Its totient is φ = 174130917449328.

The previous prime is 204300012400417. The next prime is 204300012400427. The reversal of 204300012400421 is 124004210003402.

It is not a de Polignac number, because 204300012400421 - 2² = 204300012400417 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 (204300012400427) 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, 40843010 + ... + 45571388.

It is an arithmetic number, because the mean of its divisors is an integer number (14674811032800).

Almost surely, 2^{204300012400421} is an apocalyptic number.

It is an amenable number.

204300012400421 is a deficient number, since it is larger than the sum of its proper divisors (30496964124379).

204300012400421 is a wasteful number, since it uses less digits than its factorization.

204300012400421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4763048.

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

Adding to 204300012400421 its reverse (124004210003402), we get a palindrome (328304222403823).

The spelling of 204300012400421 in words is "two hundred four trillion, three hundred billion, twelve million, four hundred thousand, four hundred twenty-one".