2212221020121 has 96 divisors (see below), whose sum is σ = 3868211183616. Its totient is φ = 1191634416000.

The previous prime is 2212221020077. The next prime is 2212221020147. The reversal of 2212221020121 is 1210201222122.

It is a happy number.

2212221020121 is a `hidden beast` number, since 221 + 2 + 221 + 0 + 201 + 21 = 666.

It is not a de Polignac number, because 2212221020121 - 2⁹ = 2212221019609 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2212221020094 and 2212221020103.

It is not an unprimeable number, because it can be changed into a prime (2212221010121) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 19310791 + ... + 19425011.

It is an arithmetic number, because the mean of its divisors is an integer number (40293866496).

Almost surely, 2^{2212221020121} is an apocalyptic number.

2212221020121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2212221020121 is a deficient number, since it is larger than the sum of its proper divisors (1655990163495).

2212221020121 is a wasteful number, since it uses less digits than its factorization.

2212221020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114523 (or 114520 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 2212221020121 its reverse (1210201222122), we get a palindrome (3422422242243).

The spelling of 2212221020121 in words is "two trillion, two hundred twelve billion, two hundred twenty-one million, twenty thousand, one hundred twenty-one".