221200120220122 has 32 divisors (see below), whose sum is σ = 344555375028480. Its totient is φ = 106377544842240.

The previous prime is 221200120220071. The next prime is 221200120220129. The reversal of 221200120220122 is 221022021002122.

It is a self number, because there is not a number n which added to its sum of digits gives 221200120220122.

It is not an unprimeable number, because it can be changed into a prime (221200120220129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 688115043 + ... + 688436425.

It is an arithmetic number, because the mean of its divisors is an integer number (10767355469640).

Almost surely, 2^{221200120220122} is an apocalyptic number.

221200120220122 is a deficient number, since it is larger than the sum of its proper divisors (123355254808358).

221200120220122 is a wasteful number, since it uses less digits than its factorization.

221200120220122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366798.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 221200120220122 its reverse (221022021002122), we get a palindrome (442222141222244).

The spelling of 221200120220122 in words is "two hundred twenty-one trillion, two hundred billion, one hundred twenty million, two hundred twenty thousand, one hundred twenty-two".