2220111221121 has 32 divisors (see below), whose sum is σ = 3602614579200. Its totient is φ = 1344976093440.

The previous prime is 2220111221117. The next prime is 2220111221143. The reversal of 2220111221121 is 1211221110222.

It is not a de Polignac number, because 2220111221121 - 2² = 2220111221117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2220111221094 and 2220111221103.

It is not an unprimeable number, because it can be changed into a prime (2220111221161) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 83380545 + ... + 83407166.

It is an arithmetic number, because the mean of its divisors is an integer number (112581705600).

Almost surely, 2^{2220111221121} is an apocalyptic number.

It is an amenable number.

2220111221121 is a deficient number, since it is larger than the sum of its proper divisors (1382503358079).

2220111221121 is a wasteful number, since it uses less digits than its factorization.

2220111221121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166787766 (or 166787760 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 2220111221121 its reverse (1211221110222), we get a palindrome (3431332331343).

The spelling of 2220111221121 in words is "two trillion, two hundred twenty billion, one hundred eleven million, two hundred twenty-one thousand, one hundred twenty-one".