204121631221434 has 24 divisors (see below), whose sum is σ = 446396838376320. Its totient is φ = 67404650807688.

The previous prime is 204121631221429. The next prime is 204121631221531. The reversal of 204121631221434 is 434122136121402.

204121631221434 is a `hidden beast` number, since 2 + 0 + 4 + 1 + 2 + 1 + 631 + 2 + 2 + 14 + 3 + 4 = 666.

It is a super-3 number, since 3×204121631221434³ (a number of 44 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52991075754 + ... + 52991079605.

It is an arithmetic number, because the mean of its divisors is an integer number (18599868265680).

Almost surely, 2^{204121631221434} is an apocalyptic number.

204121631221434 is an abundant number, since it is smaller than the sum of its proper divisors (242275207154886).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

204121631221434 is a wasteful number, since it uses less digits than its factorization.

204121631221434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105982155474 (or 105982155471 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

Adding to 204121631221434 its reverse (434122136121402), we get a palindrome (638243767342836).

The spelling of 204121631221434 in words is "two hundred four trillion, one hundred twenty-one billion, six hundred thirty-one million, two hundred twenty-one thousand, four hundred thirty-four".