210221201444 has 24 divisors (see below), whose sum is σ = 374011478400. Its totient is φ = 103361640480.

The previous prime is 210221201429. The next prime is 210221201447. The reversal of 210221201444 is 444102122012.

It is not an unprimeable number, because it can be changed into a prime (210221201447) 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, 889667 + ... + 1100885.

It is an arithmetic number, because the mean of its divisors is an integer number (15583811600).

Almost surely, 2^210221201444 is an apocalyptic number.

It is an amenable number.

210221201444 is a deficient number, since it is larger than the sum of its proper divisors (163790276956).

210221201444 is a wasteful number, since it uses less digits than its factorization.

210221201444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215363 (or 215361 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 210221201444 its reverse (444102122012), we get a palindrome (654323323456).

The spelling of 210221201444 in words is "two hundred ten billion, two hundred twenty-one million, two hundred one thousand, four hundred forty-four".