221331020222 has 32 divisors (see below), whose sum is σ = 361177471200. Its totient is φ = 101116366848.

The previous prime is 221331020213. The next prime is 221331020237. The reversal of 221331020222 is 222020133122.

It is a happy number.

It is a super-2 number, since 2×221331020222² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221331020194 and 221331020203.

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, 1127054 + ... + 1308782.

It is an arithmetic number, because the mean of its divisors is an integer number (11286795975).

Almost surely, 2^221331020222 is an apocalyptic number.

221331020222 is a deficient number, since it is larger than the sum of its proper divisors (139846450978).

221331020222 is a wasteful number, since it uses less digits than its factorization.

221331020222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182220.

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

Adding to 221331020222 its reverse (222020133122), we get a palindrome (443351153344).

The spelling of 221331020222 in words is "two hundred twenty-one billion, three hundred thirty-one million, twenty thousand, two hundred twenty-two".