10221321444 has 24 divisors (see below), whose sum is σ = 23857860768. Its totient is φ = 3405948480.

The previous prime is 10221321421. The next prime is 10221321449. The reversal of 10221321444 is 44412312201.

It is not an unprimeable number, because it can be changed into a prime (10221321449) 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, 107697 + ... + 179000.

It is an arithmetic number, because the mean of its divisors is an integer number (994077532).

Almost surely, 2^10221321444 is an apocalyptic number.

It is an amenable number.

10221321444 is an abundant number, since it is smaller than the sum of its proper divisors (13636539324).

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

10221321444 is a wasteful number, since it uses less digits than its factorization.

10221321444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289675 (or 289673 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 10221321444 its reverse (44412312201), we get a palindrome (54633633645).

The spelling of 10221321444 in words is "ten billion, two hundred twenty-one million, three hundred twenty-one thousand, four hundred forty-four".