1210032221 has 16 divisors (see below), whose sum is σ = 1289176560. Its totient is φ = 1133690880.

The previous prime is 1210032203. The next prime is 1210032227. The reversal of 1210032221 is 1222300121.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 190826596 + 1019205625 = 13814^2 + 31925^2 .

It is a cyclic number.

It is not a de Polignac number, because 1210032221 - 2²² = 1205837917 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1210032196 and 1210032205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210032227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 226841 + ... + 232113.

It is an arithmetic number, because the mean of its divisors is an integer number (80573535).

Almost surely, 2^1210032221 is an apocalyptic number.

It is an amenable number.

1210032221 is a deficient number, since it is larger than the sum of its proper divisors (79144339).

1210032221 is a wasteful number, since it uses less digits than its factorization.

1210032221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5536.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1210032221 is about 34785.5174030803. The cubic root of 1210032221 is about 1065.6116952969.

Adding to 1210032221 its reverse (1222300121), we get a palindrome (2432332342).

The spelling of 1210032221 in words is "one billion, two hundred ten million, thirty-two thousand, two hundred twenty-one".