221142332 has 48 divisors (see below), whose sum is σ = 416102400. Its totient is φ = 102592512.

The previous prime is 221142293. The next prime is 221142343. The reversal of 221142332 is 233241122.

It is a congruent number.

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, 860348 + ... + 860604.

It is an arithmetic number, because the mean of its divisors is an integer number (8668800).

Almost surely, 2^221142332 is an apocalyptic number.

It is an amenable number.

221142332 is a deficient number, since it is larger than the sum of its proper divisors (194960068).

221142332 is a wasteful number, since it uses less digits than its factorization.

221142332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530 (or 528 counting only the distinct ones).

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

The square root of 221142332 is about 14870.8551199990. The cubic root of 221142332 is about 604.7241252984.

Adding to 221142332 its reverse (233241122), we get a palindrome (454383454).

The spelling of 221142332 in words is "two hundred twenty-one million, one hundred forty-two thousand, three hundred thirty-two".