221000121022 has 16 divisors (see below), whose sum is σ = 357071726592. Its totient is φ = 102286170360.

The previous prime is 221000120977. The next prime is 221000121077. The reversal of 221000121022 is 220121000122.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 221000120993 and 221000121011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77488098 + ... + 77490949.

It is an arithmetic number, because the mean of its divisors is an integer number (22316982912).

Almost surely, 2^221000121022 is an apocalyptic number.

221000121022 is a deficient number, since it is larger than the sum of its proper divisors (136071605570).

221000121022 is a wasteful number, since it uses less digits than its factorization.

221000121022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154979103.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 221000121022 its reverse (220121000122), we get a palindrome (441121121144).

The spelling of 221000121022 in words is "two hundred twenty-one billion, one hundred twenty-one thousand, twenty-two".