1172227321 has 2 divisors, whose sum is σ = 1172227322. Its totient is φ = 1172227320.

The previous prime is 1172227313. The next prime is 1172227327. The reversal of 1172227321 is 1237222711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 968765625 + 203461696 = 31125^2 + 14264^2 .

It is a cyclic number.

It is not a de Polignac number, because 1172227321 - 2³ = 1172227313 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1172227321.

It is not a weakly prime, because it can be changed into another prime (1172227327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 586113660 + 586113661.

It is an arithmetic number, because the mean of its divisors is an integer number (586113661).

Almost surely, 2^1172227321 is an apocalyptic number.

It is an amenable number.

1172227321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1172227321 is an equidigital number, since it uses as much as digits as its factorization.

1172227321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2352, while the sum is 28.

The square root of 1172227321 is about 34237.8054349282. The cubic root of 1172227321 is about 1054.3964775881.

The spelling of 1172227321 in words is "one billion, one hundred seventy-two million, two hundred twenty-seven thousand, three hundred twenty-one".