204401122403 has 4 divisors (see below), whose sum is σ = 208257747408. Its totient is φ = 200544497400.

The previous prime is 204401122391. The next prime is 204401122411. The reversal of 204401122403 is 304221104402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 204401122403 - 2¹⁸ = 204400860259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204401122423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1928312423 + ... + 1928312528.

It is an arithmetic number, because the mean of its divisors is an integer number (52064436852).

Almost surely, 2^204401122403 is an apocalyptic number.

204401122403 is a deficient number, since it is larger than the sum of its proper divisors (3856625005).

204401122403 is an equidigital number, since it uses as much as digits as its factorization.

204401122403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3856625004.

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

Adding to 204401122403 its reverse (304221104402), we get a palindrome (508622226805).

The spelling of 204401122403 in words is "two hundred four billion, four hundred one million, one hundred twenty-two thousand, four hundred three".