2212211002221 has 40 divisors (see below), whose sum is σ = 3605581808928. Its totient is φ = 1340549028000.

The previous prime is 2212211002207. The next prime is 2212211002231. The reversal of 2212211002221 is 1222001122122.

It is a happy number.

2212211002221 is a `hidden beast` number, since 221 + 221 + 1 + 0 + 0 + 2 + 221 = 666.

It is not a de Polignac number, because 2212211002221 - 2²⁵ = 2212177447789 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2212211002194 and 2212211002203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2212211002231) 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, 6435691 + ... + 6770711.

Almost surely, 2^{2212211002221} is an apocalyptic number.

It is an amenable number.

2212211002221 is a deficient number, since it is larger than the sum of its proper divisors (1393370806707).

2212211002221 is a wasteful number, since it uses less digits than its factorization.

2212211002221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342455 (or 342446 counting only the distinct ones).

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

Adding to 2212211002221 its reverse (1222001122122), we get a palindrome (3434212124343).

The spelling of 2212211002221 in words is "two trillion, two hundred twelve billion, two hundred eleven million, two thousand, two hundred twenty-one".