204030121031321 has 16 divisors (see below), whose sum is σ = 221329890633600. Its totient is φ = 186959674178688.

The previous prime is 204030121031279. The next prime is 204030121031323. The reversal of 204030121031321 is 123130121030402.

It is a cyclic number.

It is not a de Polignac number, because 204030121031321 - 2⁴⁶ = 133661376853657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204030121031323) 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, 544155650 + ... + 544530468.

It is an arithmetic number, because the mean of its divisors is an integer number (13833118164600).

Almost surely, 2^{204030121031321} is an apocalyptic number.

It is an amenable number.

204030121031321 is a deficient number, since it is larger than the sum of its proper divisors (17299769602279).

204030121031321 is a wasteful number, since it uses less digits than its factorization.

204030121031321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680608.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 204030121031321 its reverse (123130121030402), we get a palindrome (327160242061723).

The spelling of 204030121031321 in words is "two hundred four trillion, thirty billion, one hundred twenty-one million, thirty-one thousand, three hundred twenty-one".