146221322 has 32 divisors (see below), whose sum is σ = 240568272. Its totient is φ = 66253824.

The previous prime is 146221307. The next prime is 146221351. The reversal of 146221322 is 223122641.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 1957201 + 144264121 = 1399^2 + 12011^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 461108 + ... + 461424.

Almost surely, 2^146221322 is an apocalyptic number.

146221322 is a deficient number, since it is larger than the sum of its proper divisors (94346950).

146221322 is a wasteful number, since it uses less digits than its factorization.

146221322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602.

The product of its digits is 1152, while the sum is 23.

The square root of 146221322 is about 12092.2008749441. The cubic root of 146221322 is about 526.8296818636.

Adding to 146221322 its reverse (223122641), we get a palindrome (369343963).

The spelling of 146221322 in words is "one hundred forty-six million, two hundred twenty-one thousand, three hundred twenty-two".