1222221332 has 6 divisors (see below), whose sum is σ = 2138887338. Its totient is φ = 611110664.

The previous prime is 1222221317. The next prime is 1222221337. The reversal of 1222221332 is 2331222221.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1186389136 + 35832196 = 34444^2 + 5986^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222221337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152777663 + ... + 152777670.

It is an arithmetic number, because the mean of its divisors is an integer number (356481223).

Almost surely, 2^1222221332 is an apocalyptic number.

It is an amenable number.

1222221332 is a deficient number, since it is larger than the sum of its proper divisors (916666006).

1222221332 is a wasteful number, since it uses less digits than its factorization.

1222221332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305555337 (or 305555335 counting only the distinct ones).

The product of its digits is 576, while the sum is 20.

The square root of 1222221332 is about 34960.2822070990. The cubic root of 1222221332 is about 1069.1778504151.

Adding to 1222221332 its reverse (2331222221), we get a palindrome (3553443553).

The spelling of 1222221332 in words is "one billion, two hundred twenty-two million, two hundred twenty-one thousand, three hundred thirty-two".