1210445221 has 8 divisors (see below), whose sum is σ = 1219982400. Its totient is φ = 1200920160.

The previous prime is 1210445207. The next prime is 1210445231. The reversal of 1210445221 is 1225440121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1210445221 - 2⁹ = 1210444709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1210445192 and 1210445201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210445231) 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, 377736 + ... + 380926.

It is an arithmetic number, because the mean of its divisors is an integer number (152497800).

Almost surely, 2^1210445221 is an apocalyptic number.

It is an amenable number.

1210445221 is a deficient number, since it is larger than the sum of its proper divisors (9537179).

1210445221 is a wasteful number, since it uses less digits than its factorization.

1210445221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6059.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 1210445221 is about 34791.4532751939. The cubic root of 1210445221 is about 1065.7329172946.

Adding to 1210445221 its reverse (1225440121), we get a palindrome (2435885342).

The spelling of 1210445221 in words is "one billion, two hundred ten million, four hundred forty-five thousand, two hundred twenty-one".