4020200421361 has 2 divisors, whose sum is σ = 4020200421362. Its totient is φ = 4020200421360.

The previous prime is 4020200421323. The next prime is 4020200421389. The reversal of 4020200421361 is 1631240020204.

It is a happy number.

4020200421361 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2885432206336 + 1134768215025 = 1698656^2 + 1065255^2 .

It is a cyclic number.

It is not a de Polignac number, because 4020200421361 - 2³⁹ = 3470444607473 is a prime.

It is a super-2 number, since 2×4020200421361² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4020200421311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2010100210680 + 2010100210681.

It is an arithmetic number, because the mean of its divisors is an integer number (2010100210681).

Almost surely, 2^{4020200421361} is an apocalyptic number.

It is an amenable number.

4020200421361 is a deficient number, since it is larger than the sum of its proper divisors (1).

4020200421361 is an equidigital number, since it uses as much as digits as its factorization.

4020200421361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 4020200421361 its reverse (1631240020204), we get a palindrome (5651440441565).

The spelling of 4020200421361 in words is "four trillion, twenty billion, two hundred million, four hundred twenty-one thousand, three hundred sixty-one".