204120322122121 has 8 divisors (see below), whose sum is σ = 204275657805440. Its totient is φ = 203964988722768.

The previous prime is 204120322122047. The next prime is 204120322122313. The reversal of 204120322122121 is 121221223021402.

204120322122121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 204120322122121 - 2¹⁵ = 204120322089353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204120322125121) 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, 206863495 + ... + 207847891.

It is an arithmetic number, because the mean of its divisors is an integer number (25534457225680).

Almost surely, 2^{204120322122121} is an apocalyptic number.

It is an amenable number.

204120322122121 is a deficient number, since it is larger than the sum of its proper divisors (155335683319).

204120322122121 is a wasteful number, since it uses less digits than its factorization.

204120322122121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1141983.

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 204120322122121 its reverse (121221223021402), we get a palindrome (325341545143523).

The spelling of 204120322122121 in words is "two hundred four trillion, one hundred twenty billion, three hundred twenty-two million, one hundred twenty-two thousand, one hundred twenty-one".