2012202221 has 2 divisors, whose sum is σ = 2012202222. Its totient is φ = 2012202220.

The previous prime is 2012202209. The next prime is 2012202233. The reversal of 2012202221 is 1222022102.

It is a balanced prime because it is at equal distance from previous prime (2012202209) and next prime (2012202233).

It can be written as a sum of positive squares in only one way, i.e., 1142778025 + 869424196 = 33805^2 + 29486^2 .

It is a cyclic number.

It is not a de Polignac number, because 2012202221 - 2¹⁰ = 2012201197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2012202196 and 2012202205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2012202251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1006101110 + 1006101111.

It is an arithmetic number, because the mean of its divisors is an integer number (1006101111).

Almost surely, 2^2012202221 is an apocalyptic number.

It is an amenable number.

2012202221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2012202221 is an equidigital number, since it uses as much as digits as its factorization.

2012202221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 2012202221 is about 44857.5770745590. The cubic root of 2012202221 is about 1262.4781623645.

Adding to 2012202221 its reverse (1222022102), we get a palindrome (3234224323).

The spelling of 2012202221 in words is "two billion, twelve million, two hundred two thousand, two hundred twenty-one".