12211021220122 has 32 divisors (see below), whose sum is σ = 18811150525440. Its totient is φ = 5942744224560.

The previous prime is 12211021220107. The next prime is 12211021220129. The reversal of 12211021220122 is 22102212011221.

It is a self number, because there is not a number n which added to its sum of digits gives 12211021220122.

It is not an unprimeable number, because it can be changed into a prime (12211021220129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23364793 + ... + 23881699.

It is an arithmetic number, because the mean of its divisors is an integer number (587848453920).

Almost surely, 2^{12211021220122} is an apocalyptic number.

12211021220122 is a deficient number, since it is larger than the sum of its proper divisors (6600129305318).

12211021220122 is a wasteful number, since it uses less digits than its factorization.

12211021220122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518946.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 12211021220122 its reverse (22102212011221), we get a palindrome (34313233231343).

The spelling of 12211021220122 in words is "twelve trillion, two hundred eleven billion, twenty-one million, two hundred twenty thousand, one hundred twenty-two".