1044202221 has 6 divisors (see below), whose sum is σ = 1508292110. Its totient is φ = 696134808.

The previous prime is 1044202219. The next prime is 1044202241. The reversal of 1044202221 is 1222024401.

1044202221 is a `hidden beast` number, since 1 + 0 + 442 + 0 + 2 + 221 = 666.

It can be written as a sum of positive squares in only one way, i.e., 967832100 + 76370121 = 31110^2 + 8739^2 .

It is not a de Polignac number, because 1044202221 - 2¹ = 1044202219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1044202194 and 1044202203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1044202241) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 58011226 + ... + 58011243.

Almost surely, 2^1044202221 is an apocalyptic number.

It is an amenable number.

1044202221 is a deficient number, since it is larger than the sum of its proper divisors (464089889).

1044202221 is a wasteful number, since it uses less digits than its factorization.

1044202221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116022475 (or 116022472 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 1044202221 is about 32314.1179827022. The cubic root of 1044202221 is about 1014.5221596706.

Adding to 1044202221 its reverse (1222024401), we get a palindrome (2266226622).

The spelling of 1044202221 in words is "one billion, forty-four million, two hundred two thousand, two hundred twenty-one".