2236346221 has 2 divisors, whose sum is σ = 2236346222. Its totient is φ = 2236346220.

The previous prime is 2236346219. The next prime is 2236346239. The reversal of 2236346221 is 1226436322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1649253321 + 587092900 = 40611^2 + 24230^2 .

It is a cyclic number.

It is not a de Polignac number, because 2236346221 - 2¹ = 2236346219 is a prime.

Together with 2236346219, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2236346201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1118173110 + 1118173111.

It is an arithmetic number, because the mean of its divisors is an integer number (1118173111).

Almost surely, 2^2236346221 is an apocalyptic number.

It is an amenable number.

2236346221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2236346221 is an equidigital number, since it uses as much as digits as its factorization.

2236346221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 31.

The square root of 2236346221 is about 47290.0224254546. The cubic root of 2236346221 is about 1307.7147230243.

The spelling of 2236346221 in words is "two billion, two hundred thirty-six million, three hundred forty-six thousand, two hundred twenty-one".