21003453050401 has 16 divisors (see below), whose sum is σ = 22295938809600. Its totient is φ = 19744533768960.

The previous prime is 21003453050387. The next prime is 21003453050441. The reversal of 21003453050401 is 10405035430012.

It is a cyclic number.

It is not a de Polignac number, because 21003453050401 - 2³⁹ = 20453697236513 is a prime.

It is a super-2 number, since 2×21003453050401² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21003453050401.

It is not an unprimeable number, because it can be changed into a prime (21003453050441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21787101 + ... + 22730698.

It is an arithmetic number, because the mean of its divisors is an integer number (1393496175600).

Almost surely, 2^{21003453050401} is an apocalyptic number.

It is an amenable number.

21003453050401 is a deficient number, since it is larger than the sum of its proper divisors (1292485759199).

21003453050401 is a wasteful number, since it uses less digits than its factorization.

21003453050401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44518176.

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 21003453050401 its reverse (10405035430012), we get a palindrome (31408488480413).

The spelling of 21003453050401 in words is "twenty-one trillion, three billion, four hundred fifty-three million, fifty thousand, four hundred one".