1210321153 has 2 divisors, whose sum is σ = 1210321154. Its totient is φ = 1210321152.

The previous prime is 1210321139. The next prime is 1210321187. The reversal of 1210321153 is 3511230121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1066153104 + 144168049 = 32652^2 + 12007^2 .

It is a cyclic number.

It is not a de Polignac number, because 1210321153 - 2¹⁷ = 1210190081 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1210321153.

It is not a weakly prime, because it can be changed into another prime (1210321193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605160576 + 605160577.

It is an arithmetic number, because the mean of its divisors is an integer number (605160577).

Almost surely, 2^1210321153 is an apocalyptic number.

It is an amenable number.

1210321153 is a deficient number, since it is larger than the sum of its proper divisors (1).

1210321153 is an equidigital number, since it uses as much as digits as its factorization.

1210321153 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 1210321153 is about 34789.6702053929. The cubic root of 1210321153 is about 1065.6965042825.

Adding to 1210321153 its reverse (3511230121), we get a palindrome (4721551274).

The spelling of 1210321153 in words is "one billion, two hundred ten million, three hundred twenty-one thousand, one hundred fifty-three".