221102121220122 has 128 divisors (see below), whose sum is σ = 455574206545920. Its totient is φ = 71516696888000.

The previous prime is 221102121220121. The next prime is 221102121220159. The reversal of 221102121220122 is 221022121201122.

It is a super-2 number, since 2×221102121220122² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (221102121220121) 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 63 ways as a sum of consecutive naturals, for example, 3825863047 + ... + 3825920837.

It is an arithmetic number, because the mean of its divisors is an integer number (3559173488640).

Almost surely, 2^{221102121220122} is an apocalyptic number.

221102121220122 is an abundant number, since it is smaller than the sum of its proper divisors (234472085325798).

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

221102121220122 is a wasteful number, since it uses less digits than its factorization.

221102121220122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58560.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 221102121220122 its reverse (221022121201122), we get a palindrome (442124242421244).

The spelling of 221102121220122 in words is "two hundred twenty-one trillion, one hundred two billion, one hundred twenty-one million, two hundred twenty thousand, one hundred twenty-two".