1321182061 has 2 divisors, whose sum is σ = 1321182062. Its totient is φ = 1321182060.

The previous prime is 1321182053. The next prime is 1321182067. The reversal of 1321182061 is 1602811231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1315512900 + 5669161 = 36270^2 + 2381^2 .

It is a cyclic number.

It is not a de Polignac number, because 1321182061 - 2³ = 1321182053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1321182067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660591030 + 660591031.

It is an arithmetic number, because the mean of its divisors is an integer number (660591031).

Almost surely, 2^1321182061 is an apocalyptic number.

It is an amenable number.

1321182061 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321182061 is an equidigital number, since it uses as much as digits as its factorization.

1321182061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 1321182061 is about 36348.0681880069. The cubic root of 1321182061 is about 1097.2886560214.

Adding to 1321182061 its reverse (1602811231), we get a palindrome (2923993292).

The spelling of 1321182061 in words is "one billion, three hundred twenty-one million, one hundred eighty-two thousand, sixty-one".