9420222157 has 2 divisors, whose sum is σ = 9420222158. Its totient is φ = 9420222156.

The previous prime is 9420222151. The next prime is 9420222179. The reversal of 9420222157 is 7512220249.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7614482121 + 1805740036 = 87261^2 + 42494^2 .

It is a cyclic number.

It is not a de Polignac number, because 9420222157 - 2⁷ = 9420222029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9420222151) 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, 4710111078 + 4710111079.

It is an arithmetic number, because the mean of its divisors is an integer number (4710111079).

Almost surely, 2^9420222157 is an apocalyptic number.

It is an amenable number.

9420222157 is a deficient number, since it is larger than the sum of its proper divisors (1).

9420222157 is an equidigital number, since it uses as much as digits as its factorization.

9420222157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 9420222157 is about 97057.8289320341. The cubic root of 9420222157 is about 2111.9666125878.

The spelling of 9420222157 in words is "nine billion, four hundred twenty million, two hundred twenty-two thousand, one hundred fifty-seven".