1045221137 has 2 divisors, whose sum is σ = 1045221138. Its totient is φ = 1045221136.

The previous prime is 1045221091. The next prime is 1045221157. The reversal of 1045221137 is 7311225401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 577969681 + 467251456 = 24041^2 + 21616^2 .

It is a cyclic number.

It is not a de Polignac number, because 1045221137 - 2²⁴ = 1028443921 is a prime.

It is not a weakly prime, because it can be changed into another prime (1045221157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 522610568 + 522610569.

It is an arithmetic number, because the mean of its divisors is an integer number (522610569).

Almost surely, 2^1045221137 is an apocalyptic number.

It is an amenable number.

1045221137 is a deficient number, since it is larger than the sum of its proper divisors (1).

1045221137 is an equidigital number, since it uses as much as digits as its factorization.

1045221137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 1045221137 is about 32329.8799410081. The cubic root of 1045221137 is about 1014.8520372861.

Adding to 1045221137 its reverse (7311225401), we get a palindrome (8356446538).

The spelling of 1045221137 in words is "one billion, forty-five million, two hundred twenty-one thousand, one hundred thirty-seven".