2120002221 has 32 divisors (see below), whose sum is σ = 3054457728. Its totient is φ = 1303142400.

The previous prime is 2120002217. The next prime is 2120002303. The reversal of 2120002221 is 1222000212.

It is not a de Polignac number, because 2120002221 - 2² = 2120002217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2120002197 and 2120002206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120002201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 497526 + ... + 501768.

It is an arithmetic number, because the mean of its divisors is an integer number (95451804).

Almost surely, 2^2120002221 is an apocalyptic number.

It is an amenable number.

2120002221 is a deficient number, since it is larger than the sum of its proper divisors (934455507).

2120002221 is a wasteful number, since it uses less digits than its factorization.

2120002221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4461.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 2120002221 is about 46043.4818513978. The cubic root of 2120002221 is about 1284.6321063235.

Adding to 2120002221 its reverse (1222000212), we get a palindrome (3342002433).

The spelling of 2120002221 in words is "two billion, one hundred twenty million, two thousand, two hundred twenty-one".