2210423021 has 2 divisors, whose sum is σ = 2210423022. Its totient is φ = 2210423020.

The previous prime is 2210422979. The next prime is 2210423029. The reversal of 2210423021 is 1203240122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1769884900 + 440538121 = 42070^2 + 20989^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2210423021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2210423029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1105211510 + 1105211511.

It is an arithmetic number, because the mean of its divisors is an integer number (1105211511).

Almost surely, 2^2210423021 is an apocalyptic number.

It is an amenable number.

2210423021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2210423021 is an equidigital number, since it uses as much as digits as its factorization.

2210423021 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 17.

The square root of 2210423021 is about 47015.1360840315. The cubic root of 2210423021 is about 1302.6421649931.

Adding to 2210423021 its reverse (1203240122), we get a palindrome (3413663143).

The spelling of 2210423021 in words is "two billion, two hundred ten million, four hundred twenty-three thousand, twenty-one".