2340022021 has 2 divisors, whose sum is σ = 2340022022. Its totient is φ = 2340022020.

The previous prime is 2340021997. The next prime is 2340022051. The reversal of 2340022021 is 1202200432.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1572122500 + 767899521 = 39650^2 + 27711^2 .

It is a cyclic number.

It is not a de Polignac number, because 2340022021 - 2⁵ = 2340021989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2340021986 and 2340022004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2340022051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1170011010 + 1170011011.

It is an arithmetic number, because the mean of its divisors is an integer number (1170011011).

Almost surely, 2^2340022021 is an apocalyptic number.

It is an amenable number.

2340022021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2340022021 is an equidigital number, since it uses as much as digits as its factorization.

2340022021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 2340022021 is about 48373.7741033300. The cubic root of 2340022021 is about 1327.6185588351.

Adding to 2340022021 its reverse (1202200432), we get a palindrome (3542222453).

The spelling of 2340022021 in words is "two billion, three hundred forty million, twenty-two thousand, twenty-one".