201221221111022 has 48 divisors (see below), whose sum is σ = 354779042154912. Its totient is φ = 85339039242240.

The previous prime is 201221221110961. The next prime is 201221221111087. The reversal of 201221221111022 is 220111122122102.

It is a junction number, because it is equal to n+sod(n) for n = 201221221110985 and 201221221111003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7410563 + ... + 21385950.

It is an arithmetic number, because the mean of its divisors is an integer number (7391230044894).

Almost surely, 2^{201221221111022} is an apocalyptic number.

201221221111022 is a deficient number, since it is larger than the sum of its proper divisors (153557821043890).

201221221111022 is a wasteful number, since it uses less digits than its factorization.

201221221111022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28797273 (or 28797266 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 201221221111022 its reverse (220111122122102), we get a palindrome (421332343233124).

The spelling of 201221221111022 in words is "two hundred one trillion, two hundred twenty-one billion, two hundred twenty-one million, one hundred eleven thousand, twenty-two".