21201044410 has 64 divisors (see below), whose sum is σ = 47534522112. Its totient is φ = 6628916736.

The previous prime is 21201044401. The next prime is 21201044479. The reversal of 21201044410 is 1444010212.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64819 + ... + 215878.

It is an arithmetic number, because the mean of its divisors is an integer number (742726908).

Almost surely, 2^21201044410 is an apocalyptic number.

21201044410 is an abundant number, since it is smaller than the sum of its proper divisors (26333477702).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21201044410 is a wasteful number, since it uses less digits than its factorization.

21201044410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280807.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 21201044410 its reverse (1444010212), we get a palindrome (22645054622).

The spelling of 21201044410 in words is "twenty-one billion, two hundred one million, forty-four thousand, four hundred ten".