2112210010221 has 16 divisors (see below), whose sum is σ = 2893936942464. Its totient is φ = 1369352101824.

The previous prime is 2112210010193. The next prime is 2112210010277. The reversal of 2112210010221 is 1220100122112.

It is not a de Polignac number, because 2112210010221 - 2⁵ = 2112210010189 is a prime.

It is a super-2 number, since 2×2112210010221² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2112210010221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112210010121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4860625 + ... + 5277318.

It is an arithmetic number, because the mean of its divisors is an integer number (180871058904).

Almost surely, 2^{2112210010221} is an apocalyptic number.

It is an amenable number.

2112210010221 is a deficient number, since it is larger than the sum of its proper divisors (781726932243).

2112210010221 is a wasteful number, since it uses less digits than its factorization.

2112210010221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10139860.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 2112210010221 its reverse (1220100122112), we get a palindrome (3332310132333).

The spelling of 2112210010221 in words is "two trillion, one hundred twelve billion, two hundred ten million, ten thousand, two hundred twenty-one".