221121000020022 has 32 divisors (see below), whose sum is σ = 443511961401600. Its totient is φ = 73495342440480.

The previous prime is 221121000020009. The next prime is 221121000020069. The reversal of 221121000020022 is 220020000121122.

221121000020022 is digitally balanced in base 2, 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 = 221121000019983 and 221121000020010.

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, 549245533 + ... + 549647975.

It is an arithmetic number, because the mean of its divisors is an integer number (13859748793800).

Almost surely, 2^{221121000020022} is an apocalyptic number.

221121000020022 is an abundant number, since it is smaller than the sum of its proper divisors (222390961381578).

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

221121000020022 is a wasteful number, since it uses less digits than its factorization.

221121000020022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665188.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 221121000020022 its reverse (220020000121122), we get a palindrome (441141000141144).

The spelling of 221121000020022 in words is "two hundred twenty-one trillion, one hundred twenty-one billion, twenty thousand, twenty-two".