12221020202122 has 16 divisors (see below), whose sum is σ = 18514457881920. Its totient is φ = 6049565982432.

The previous prime is 12221020202107. The next prime is 12221020202161. The reversal of 12221020202122 is 22120202012221.

It is a self number, because there is not a number n which added to its sum of digits gives 12221020202122.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7163083 + ... + 8703550.

It is an arithmetic number, because the mean of its divisors is an integer number (1157153617620).

Almost surely, 2^{12221020202122} is an apocalyptic number.

12221020202122 is a deficient number, since it is larger than the sum of its proper divisors (6293437679798).

12221020202122 is a wasteful number, since it uses less digits than its factorization.

12221020202122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15870477.

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

Adding to 12221020202122 its reverse (22120202012221), we get a palindrome (34341222214343).

The spelling of 12221020202122 in words is "twelve trillion, two hundred twenty-one billion, twenty million, two hundred two thousand, one hundred twenty-two".