2012211202221 has 16 divisors (see below), whose sum is σ = 3252058509120. Its totient is φ = 1219521940560.

The previous prime is 2012211202207. The next prime is 2012211202237. The reversal of 2012211202221 is 1222021122102.

It is a happy number.

2012211202221 is a `hidden beast` number, since 20 + 1 + 221 + 1 + 202 + 221 = 666.

It is not a de Polignac number, because 2012211202221 - 2¹⁰ = 2012211201197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2012211202194 and 2012211202203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012211202321) 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, 3387560650 + ... + 3387561243.

It is an arithmetic number, because the mean of its divisors is an integer number (203253656820).

Almost surely, 2^{2012211202221} is an apocalyptic number.

It is an amenable number.

2012211202221 is a deficient number, since it is larger than the sum of its proper divisors (1239847306899).

2012211202221 is a wasteful number, since it uses less digits than its factorization.

2012211202221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6775121913 (or 6775121907 counting only the distinct ones).

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

Adding to 2012211202221 its reverse (1222021122102), we get a palindrome (3234232324323).

The spelling of 2012211202221 in words is "two trillion, twelve billion, two hundred eleven million, two hundred two thousand, two hundred twenty-one".