1250410221 has 6 divisors (see below), whose sum is σ = 1806148110. Its totient is φ = 833606808.

The previous prime is 1250410207. The next prime is 1250410243. The reversal of 1250410221 is 1220140521.

1250410221 is a `hidden beast` number, since 1 + 250 + 410 + 2 + 2 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 956664900 + 293745321 = 30930^2 + 17139^2 .

It is not a de Polignac number, because 1250410221 - 2¹⁸ = 1250148077 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1250410194 and 1250410203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1250410261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 69467226 + ... + 69467243.

It is an arithmetic number, because the mean of its divisors is an integer number (301024685).

Almost surely, 2^1250410221 is an apocalyptic number.

It is an amenable number.

1250410221 is a deficient number, since it is larger than the sum of its proper divisors (555737889).

1250410221 is a wasteful number, since it uses less digits than its factorization.

1250410221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138934475 (or 138934472 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 1250410221 is about 35361.1399844519. The cubic root of 1250410221 is about 1077.3351713747.

Adding to 1250410221 its reverse (1220140521), we get a palindrome (2470550742).

The spelling of 1250410221 in words is "one billion, two hundred fifty million, four hundred ten thousand, two hundred twenty-one".