2220120121121 has 16 divisors (see below), whose sum is σ = 2548841727744. Its totient is φ = 1894293222144.

The previous prime is 2220120121061. The next prime is 2220120121169. The reversal of 2220120121121 is 1211210210222.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2220120121121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2220120121121.

It is not an unprimeable number, because it can be changed into a prime (2220120121421) 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, 6074060 + ... + 6429186.

It is an arithmetic number, because the mean of its divisors is an integer number (159302607984).

Almost surely, 2^{2220120121121} is an apocalyptic number.

It is an amenable number.

2220120121121 is a deficient number, since it is larger than the sum of its proper divisors (328721606623).

2220120121121 is a wasteful number, since it uses less digits than its factorization.

2220120121121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359200.

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

Adding to 2220120121121 its reverse (1211210210222), we get a palindrome (3431330331343).

The spelling of 2220120121121 in words is "two trillion, two hundred twenty billion, one hundred twenty million, one hundred twenty-one thousand, one hundred twenty-one".