10401050021 has 2 divisors, whose sum is σ = 10401050022. Its totient is φ = 10401050020.

The previous prime is 10401050003. The next prime is 10401050029. The reversal of 10401050021 is 12005010401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7794947521 + 2606102500 = 88289^2 + 51050^2 .

It is an emirp because it is prime and its reverse (12005010401) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10401050021 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 10401049978 and 10401050005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10401050029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5200525010 + 5200525011.

It is an arithmetic number, because the mean of its divisors is an integer number (5200525011).

Almost surely, 2^10401050021 is an apocalyptic number.

It is an amenable number.

10401050021 is a deficient number, since it is larger than the sum of its proper divisors (1).

10401050021 is an equidigital number, since it uses as much as digits as its factorization.

10401050021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40, while the sum is 14.

Adding to 10401050021 its reverse (12005010401), we get a palindrome (22406060422).

The spelling of 10401050021 in words is "ten billion, four hundred one million, fifty thousand, twenty-one".