400000013402201 has 2 divisors, whose sum is σ = 400000013402202. Its totient is φ = 400000013402200.

The previous prime is 400000013402179. The next prime is 400000013402263. The reversal of 400000013402201 is 102204310000004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 399904005760000 + 96007642201 = 19997600^2 + 309851^2 .

It is a cyclic number.

It is not a de Polignac number, because 400000013402201 - 2³⁰ = 399998939660377 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 400000013402201.

It is not a weakly prime, because it can be changed into another prime (400000013402501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200000006701100 + 200000006701101.

It is an arithmetic number, because the mean of its divisors is an integer number (200000006701101).

Almost surely, 2^{400000013402201} is an apocalyptic number.

It is an amenable number.

400000013402201 is a deficient number, since it is larger than the sum of its proper divisors (1).

400000013402201 is an equidigital number, since it uses as much as digits as its factorization.

400000013402201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 400000013402201 its reverse (102204310000004), we get a palindrome (502204323402205).

The spelling of 400000013402201 in words is "four hundred trillion, thirteen million, four hundred two thousand, two hundred one".