2221202210121 has 16 divisors (see below), whose sum is σ = 3304324182720. Its totient is φ = 1474657064640.

The previous prime is 2221202210099. The next prime is 2221202210221. The reversal of 2221202210121 is 1210122021222.

It is a happy number.

It is not a de Polignac number, because 2221202210121 - 2⁶ = 2221202210057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2221202210094 and 2221202210103.

It is not an unprimeable number, because it can be changed into a prime (2221202210221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 170671395 + ... + 170684408.

It is an arithmetic number, because the mean of its divisors is an integer number (206520261420).

Almost surely, 2^{2221202210121} is an apocalyptic number.

It is an amenable number.

2221202210121 is a deficient number, since it is larger than the sum of its proper divisors (1083121972599).

2221202210121 is a wasteful number, since it uses less digits than its factorization.

2221202210121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341356053 (or 341356047 counting only the distinct ones).

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

Adding to 2221202210121 its reverse (1210122021222), we get a palindrome (3431324231343).

The spelling of 2221202210121 in words is "two trillion, two hundred twenty-one billion, two hundred two million, two hundred ten thousand, one hundred twenty-one".