20442401401 has 2 divisors, whose sum is σ = 20442401402. Its totient is φ = 20442401400.

The previous prime is 20442401341. The next prime is 20442401431. The reversal of 20442401401 is 10410424402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10566812025 + 9875589376 = 102795^2 + 99376^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20442401401 is a prime.

It is not a weakly prime, because it can be changed into another prime (20442401431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10221200700 + 10221200701.

It is an arithmetic number, because the mean of its divisors is an integer number (10221200701).

Almost surely, 2^20442401401 is an apocalyptic number.

It is an amenable number.

20442401401 is a deficient number, since it is larger than the sum of its proper divisors (1).

20442401401 is an equidigital number, since it uses as much as digits as its factorization.

20442401401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 20442401401 its reverse (10410424402), we get a palindrome (30852825803).

The spelling of 20442401401 in words is "twenty billion, four hundred forty-two million, four hundred one thousand, four hundred one".