221142302 has 8 divisors (see below), whose sum is σ = 331798656. Its totient is φ = 110542752.

The previous prime is 221142293. The next prime is 221142343. The reversal of 221142302 is 203241122.

221142302 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2558 + ... + 21185.

It is an arithmetic number, because the mean of its divisors is an integer number (41474832).

Almost surely, 2^221142302 is an apocalyptic number.

221142302 is a deficient number, since it is larger than the sum of its proper divisors (110656354).

221142302 is a wasteful number, since it uses less digits than its factorization.

221142302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28402.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 221142302 is about 14870.8541113145. The cubic root of 221142302 is about 604.7240979529.

Adding to 221142302 its reverse (203241122), we get a palindrome (424383424).

The spelling of 221142302 in words is "two hundred twenty-one million, one hundred forty-two thousand, three hundred two".