2210201222121 has 40 divisors (see below), whose sum is σ = 3422936541024. Its totient is φ = 1420209443520.

The previous prime is 2210201222087. The next prime is 2210201222123. The reversal of 2210201222121 is 1212221020122.

It is a happy number.

2210201222121 is a `hidden beast` number, since 221 + 0 + 201 + 2 + 221 + 21 = 666.

It is not a de Polignac number, because 2210201222121 - 2¹⁰ = 2210201221097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2210201222094 and 2210201222103.

It is not an unprimeable number, because it can be changed into a prime (2210201222123) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3733531 + ... + 4284816.

Almost surely, 2^{2210201222121} is an apocalyptic number.

It is an amenable number.

2210201222121 is a deficient number, since it is larger than the sum of its proper divisors (1212735318903).

2210201222121 is an equidigital number, since it uses as much as digits as its factorization.

2210201222121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8018483 (or 8018474 counting only the distinct ones).

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

Adding to 2210201222121 its reverse (1212221020122), we get a palindrome (3422422242243).

The spelling of 2210201222121 in words is "two trillion, two hundred ten billion, two hundred one million, two hundred twenty-two thousand, one hundred twenty-one".