2122110221 has 48 divisors (see below), whose sum is σ = 2837866752. Its totient is φ = 1547927040.

The previous prime is 2122110197. The next prime is 2122110227. The reversal of 2122110221 is 1220112212.

It is a de Polignac number, because none of the positive numbers 2^k-2122110221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2122110196 and 2122110205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122110227) 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 47 ways as a sum of consecutive naturals, for example, 4218656 + ... + 4219158.

It is an arithmetic number, because the mean of its divisors is an integer number (59122224).

Almost surely, 2^2122110221 is an apocalyptic number.

It is an amenable number.

2122110221 is a deficient number, since it is larger than the sum of its proper divisors (715756531).

2122110221 is a wasteful number, since it uses less digits than its factorization.

2122110221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 842 (or 831 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 2122110221 is about 46066.3675689760. The cubic root of 2122110221 is about 1285.0577516980.

Adding to 2122110221 its reverse (1220112212), we get a palindrome (3342222433).

The spelling of 2122110221 in words is "two billion, one hundred twenty-two million, one hundred ten thousand, two hundred twenty-one".