221001220022 has 32 divisors (see below), whose sum is σ = 383078535840. Its totient is φ = 94504660480.

The previous prime is 221001219997. The next prime is 221001220079. The reversal of 221001220022 is 220022100122.

221001220022 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 221001219979 and 221001220006.

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, 735608 + ... + 991524.

It is an arithmetic number, because the mean of its divisors is an integer number (11971204245).

Almost surely, 2^221001220022 is an apocalyptic number.

221001220022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221001220022 is a deficient number, since it is larger than the sum of its proper divisors (162077315818).

221001220022 is a wasteful number, since it uses less digits than its factorization.

221001220022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258256.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 221001220022 its reverse (220022100122), we get a palindrome (441023320144).

The spelling of 221001220022 in words is "two hundred twenty-one billion, one million, two hundred twenty thousand, twenty-two".