7162262221 has 2 divisors, whose sum is σ = 7162262222. Its totient is φ = 7162262220.

The previous prime is 7162262209. The next prime is 7162262257. The reversal of 7162262221 is 1222622617.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7024786596 + 137475625 = 83814^2 + 11725^2 .

It is an emirp because it is prime and its reverse (1222622617) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7162262221 - 2⁵ = 7162262189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7162262291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3581131110 + 3581131111.

It is an arithmetic number, because the mean of its divisors is an integer number (3581131111).

Almost surely, 2^7162262221 is an apocalyptic number.

It is an amenable number.

7162262221 is a deficient number, since it is larger than the sum of its proper divisors (1).

7162262221 is an equidigital number, since it uses as much as digits as its factorization.

7162262221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 31.

The square root of 7162262221 is about 84630.1495981190. The cubic root of 7162262221 is about 1927.5992073528.

Adding to 7162262221 its reverse (1222622617), we get a palindrome (8384884838).

The spelling of 7162262221 in words is "seven billion, one hundred sixty-two million, two hundred sixty-two thousand, two hundred twenty-one".