204220401013 has 2 divisors, whose sum is σ = 204220401014. Its totient is φ = 204220401012.

The previous prime is 204220400999. The next prime is 204220401019. The reversal of 204220401013 is 310104022402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 166841205444 + 37379195569 = 408462^2 + 193337^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204220401013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204220401019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102110200506 + 102110200507.

It is an arithmetic number, because the mean of its divisors is an integer number (102110200507).

Almost surely, 2^204220401013 is an apocalyptic number.

It is an amenable number.

204220401013 is a deficient number, since it is larger than the sum of its proper divisors (1).

204220401013 is an equidigital number, since it uses as much as digits as its factorization.

204220401013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 204220401013 its reverse (310104022402), we get a palindrome (514324423415).

The spelling of 204220401013 in words is "two hundred four billion, two hundred twenty million, four hundred one thousand, thirteen".