2200001021 has 2 divisors, whose sum is σ = 2200001022. Its totient is φ = 2200001020.

The previous prime is 2200001003. The next prime is 2200001039. The reversal of 2200001021 is 1201000022.

2200001021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (2200001003) and next prime (2200001039).

It can be written as a sum of positive squares in only one way, i.e., 1244325625 + 955675396 = 35275^2 + 30914^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2200001021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2200003021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1100000510 + 1100000511.

It is an arithmetic number, because the mean of its divisors is an integer number (1100000511).

Almost surely, 2^2200001021 is an apocalyptic number.

It is an amenable number.

2200001021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2200001021 is an equidigital number, since it uses as much as digits as its factorization.

2200001021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 8.

The square root of 2200001021 is about 46904.1684821296. The cubic root of 2200001021 is about 1300.5916480489.

Adding to 2200001021 its reverse (1201000022), we get a palindrome (3401001043).

Subtracting from 2200001021 its reverse (1201000022), we obtain a palindrome (999000999).

The spelling of 2200001021 in words is "two billion, two hundred million, one thousand, twenty-one".