10505041421 has 32 divisors (see below), whose sum is σ = 13079174400. Its totient is φ = 8233353216.

The previous prime is 10505041381. The next prime is 10505041439. The reversal of 10505041421 is 12414050501.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10505041421 is a prime.

It is a super-2 number, since 2×10505041421² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10505041451) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 573005 + ... + 591053.

It is an arithmetic number, because the mean of its divisors is an integer number (408724200).

Almost surely, 2^10505041421 is an apocalyptic number.

It is an amenable number.

10505041421 is a deficient number, since it is larger than the sum of its proper divisors (2574132979).

10505041421 is a wasteful number, since it uses less digits than its factorization.

10505041421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18213.

The product of its (nonzero) digits is 800, while the sum is 23.

Adding to 10505041421 its reverse (12414050501), we get a palindrome (22919091922).

The spelling of 10505041421 in words is "ten billion, five hundred five million, forty-one thousand, four hundred twenty-one".