221031022 has 8 divisors (see below), whose sum is σ = 332038296. Its totient is φ = 110351592.

The previous prime is 221031017. The next prime is 221031043. The reversal of 221031022 is 220130122.

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

It is a junction number, because it is equal to n+sod(n) for n = 221030993 and 221031011.

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, 80268 + ... + 82975.

It is an arithmetic number, because the mean of its divisors is an integer number (41504787).

Almost surely, 2^221031022 is an apocalyptic number.

221031022 is a deficient number, since it is larger than the sum of its proper divisors (111007274).

221031022 is a wasteful number, since it uses less digits than its factorization.

221031022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163922.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 221031022 is about 14867.1120934767. The cubic root of 221031022 is about 604.6226474575.

Adding to 221031022 its reverse (220130122), we get a palindrome (441161144).

The spelling of 221031022 in words is "two hundred twenty-one million, thirty-one thousand, twenty-two".