12221012221122 has 32 divisors (see below), whose sum is σ = 25052015001600. Its totient is φ = 3973092974928.

The previous prime is 12221012221057. The next prime is 12221012221123. The reversal of 12221012221122 is 22112221012221.

It is not an unprimeable number, because it can be changed into a prime (12221012221123) 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, 135870922 + ... + 135960837.

It is an arithmetic number, because the mean of its divisors is an integer number (782875468800).

Almost surely, 2^{12221012221122} is an apocalyptic number.

12221012221122 is an abundant number, since it is smaller than the sum of its proper divisors (12831002780478).

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

12221012221122 is a wasteful number, since it uses less digits than its factorization.

12221012221122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271831950.

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

Adding to 12221012221122 its reverse (22112221012221), we get a palindrome (34333233233343).

The spelling of 12221012221122 in words is "twelve trillion, two hundred twenty-one billion, twelve million, two hundred twenty-one thousand, one hundred twenty-two".