2031221044 has 24 divisors (see below), whose sum is σ = 3631975200. Its totient is φ = 993718176.

The previous prime is 2031221041. The next prime is 2031221053. The reversal of 2031221044 is 4401221302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2031221041) 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, 14499 + ... + 65365.

It is an arithmetic number, because the mean of its divisors is an integer number (151332300).

Almost surely, 2^2031221044 is an apocalyptic number.

It is an amenable number.

2031221044 is a deficient number, since it is larger than the sum of its proper divisors (1600754156).

2031221044 is a wasteful number, since it uses less digits than its factorization.

2031221044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51087 (or 51085 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 2031221044 is about 45069.0697041774. The cubic root of 2031221044 is about 1266.4432368915.

Adding to 2031221044 its reverse (4401221302), we get a palindrome (6432442346).

The spelling of 2031221044 in words is "two billion, thirty-one million, two hundred twenty-one thousand, forty-four".