2012212102221 has 12 divisors (see below), whose sum is σ = 2906546986720. Its totient is φ = 1341466245000.

The previous prime is 2012212102193. The next prime is 2012212102259. The reversal of 2012212102221 is 1222012122102.

It is a happy number.

2012212102221 is a `hidden beast` number, since 201 + 221 + 21 + 0 + 2 + 221 = 666.

It is not a de Polignac number, because 2012212102221 - 2⁵ = 2012212102189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2012212102194 and 2012212102203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012212102321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1014096 + ... + 2247846.

Almost surely, 2^{2012212102221} is an apocalyptic number.

It is an amenable number.

2012212102221 is a deficient number, since it is larger than the sum of its proper divisors (894334884499).

2012212102221 is a wasteful number, since it uses less digits than its factorization.

2012212102221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1414976 (or 1414973 counting only the distinct ones).

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

Adding to 2012212102221 its reverse (1222012122102), we get a palindrome (3234224224323).

The spelling of 2012212102221 in words is "two trillion, twelve billion, two hundred twelve million, one hundred two thousand, two hundred twenty-one".