221143002 has 8 divisors (see below), whose sum is σ = 442286016. Its totient is φ = 73714332.

The previous prime is 221142997. The next prime is 221143003. The reversal of 221143002 is 200341122.

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

221143002 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (221143003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18428578 + ... + 18428589.

It is an arithmetic number, because the mean of its divisors is an integer number (55285752).

Almost surely, 2^221143002 is an apocalyptic number.

221143002 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221143002 is a wasteful number, since it uses less digits than its factorization.

221143002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36857172.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 221143002 is about 14870.8776472675. The cubic root of 221143002 is about 604.7247360133.

Adding to 221143002 its reverse (200341122), we get a palindrome (421484124).

The spelling of 221143002 in words is "two hundred twenty-one million, one hundred forty-three thousand, two".