204512121401 has 8 divisors (see below), whose sum is σ = 234344838720. Its totient is φ = 174833579088.

The previous prime is 204512121371. The next prime is 204512121409. The reversal of 204512121401 is 104121215402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-204512121401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204512121409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38540906 + ... + 38546211.

It is an arithmetic number, because the mean of its divisors is an integer number (29293104840).

Almost surely, 2^204512121401 is an apocalyptic number.

It is an amenable number.

204512121401 is a deficient number, since it is larger than the sum of its proper divisors (29832717319).

204512121401 is an equidigital number, since it uses as much as digits as its factorization.

204512121401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77087503.

The product of its (nonzero) digits is 640, while the sum is 23.

Adding to 204512121401 its reverse (104121215402), we get a palindrome (308633336803).

The spelling of 204512121401 in words is "two hundred four billion, five hundred twelve million, one hundred twenty-one thousand, four hundred one".