21202405041 has 8 divisors (see below), whose sum is σ = 28927312480. Its totient is φ = 13806217152.

The previous prime is 21202405013. The next prime is 21202405061. The reversal of 21202405041 is 14050420212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21202405041 - 2¹³ = 21202396849 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21202404999 and 21202405017.

It is not an unprimeable number, because it can be changed into a prime (21202405061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82179736 + ... + 82179993.

It is an arithmetic number, because the mean of its divisors is an integer number (3615914060).

Almost surely, 2^21202405041 is an apocalyptic number.

It is an amenable number.

21202405041 is a deficient number, since it is larger than the sum of its proper divisors (7724907439).

21202405041 is a wasteful number, since it uses less digits than its factorization.

21202405041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164359775.

The product of its (nonzero) digits is 640, while the sum is 21.

Adding to 21202405041 its reverse (14050420212), we get a palindrome (35252825253).

The spelling of 21202405041 in words is "twenty-one billion, two hundred two million, four hundred five thousand, forty-one".