210221131044 has 24 divisors (see below), whose sum is σ = 491479672320. Its totient is φ = 69936038944.

The previous prime is 210221131027. The next prime is 210221131063. The reversal of 210221131044 is 440131122012.

It is a self number, because there is not a number n which added to its sum of digits gives 210221131044.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17202564 + ... + 17214779.

It is an arithmetic number, because the mean of its divisors is an integer number (20478319680).

Almost surely, 2^210221131044 is an apocalyptic number.

It is an amenable number.

210221131044 is an abundant number, since it is smaller than the sum of its proper divisors (281258541276).

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

210221131044 is a wasteful number, since it uses less digits than its factorization.

210221131044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34417859 (or 34417857 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 210221131044 its reverse (440131122012), we get a palindrome (650352253056).

The spelling of 210221131044 in words is "two hundred ten billion, two hundred twenty-one million, one hundred thirty-one thousand, forty-four".