2100022201 has 2 divisors, whose sum is σ = 2100022202. Its totient is φ = 2100022200.

The previous prime is 2100022193. The next prime is 2100022217. The reversal of 2100022201 is 1022200012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1583642025 + 516380176 = 39795^2 + 22724^2 .

It is a cyclic number.

It is not a de Polignac number, because 2100022201 - 2³ = 2100022193 is a prime.

It is not a weakly prime, because it can be changed into another prime (2100022601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050011100 + 1050011101.

It is an arithmetic number, because the mean of its divisors is an integer number (1050011101).

Almost surely, 2^2100022201 is an apocalyptic number.

It is an amenable number.

2100022201 is a deficient number, since it is larger than the sum of its proper divisors (1).

2100022201 is an equidigital number, since it uses as much as digits as its factorization.

2100022201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 2100022201 is about 45825.9991816872. Note that the first 3 decimals coincide. The cubic root of 2100022201 is about 1280.5836776919.

Adding to 2100022201 its reverse (1022200012), we get a palindrome (3122222213).

The spelling of 2100022201 in words is "two billion, one hundred million, twenty-two thousand, two hundred one".