2201221121012 has 6 divisors (see below), whose sum is σ = 3852136961778. Its totient is φ = 1100610560504.

The previous prime is 2201221121003. The next prime is 2201221121017. The reversal of 2201221121012 is 2101211221022.

It can be written as a sum of positive squares in only one way, i.e., 1711842523876 + 489378597136 = 1308374^2 + 699556^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2201221121017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275152640123 + ... + 275152640130.

It is an arithmetic number, because the mean of its divisors is an integer number (642022826963).

Almost surely, 2^{2201221121012} is an apocalyptic number.

It is an amenable number.

2201221121012 is a deficient number, since it is larger than the sum of its proper divisors (1650915840766).

2201221121012 is a wasteful number, since it uses less digits than its factorization.

2201221121012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550305280257 (or 550305280255 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 2201221121012 its reverse (2101211221022), we get a palindrome (4302432342034).

The spelling of 2201221121012 in words is "two trillion, two hundred one billion, two hundred twenty-one million, one hundred twenty-one thousand, twelve".