2124221201 has 2 divisors, whose sum is σ = 2124221202. Its totient is φ = 2124221200.

The previous prime is 2124221167. The next prime is 2124221219. The reversal of 2124221201 is 1021224212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2050278400 + 73942801 = 45280^2 + 8599^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2124221201 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2124221201.

It is not a weakly prime, because it can be changed into another prime (2124221251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1062110600 + 1062110601.

It is an arithmetic number, because the mean of its divisors is an integer number (1062110601).

Almost surely, 2^2124221201 is an apocalyptic number.

It is an amenable number.

2124221201 is a deficient number, since it is larger than the sum of its proper divisors (1).

2124221201 is an equidigital number, since it uses as much as digits as its factorization.

2124221201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 2124221201 is about 46089.2742511748. The cubic root of 2124221201 is about 1285.4837164101.

Adding to 2124221201 its reverse (1021224212), we get a palindrome (3145445413).

The spelling of 2124221201 in words is "two billion, one hundred twenty-four million, two hundred twenty-one thousand, two hundred one".