1201113533 has 2 divisors, whose sum is σ = 1201113534. Its totient is φ = 1201113532.

The previous prime is 1201113527. The next prime is 1201113547. The reversal of 1201113533 is 3353111021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 907093924 + 294019609 = 30118^2 + 17147^2 .

It is a cyclic number.

It is not a de Polignac number, because 1201113533 - 2⁴ = 1201113517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1201113553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600556766 + 600556767.

It is an arithmetic number, because the mean of its divisors is an integer number (600556767).

Almost surely, 2^1201113533 is an apocalyptic number.

It is an amenable number.

1201113533 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201113533 is an equidigital number, since it uses as much as digits as its factorization.

1201113533 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 1201113533 is about 34657.0848889516. The cubic root of 1201113533 is about 1062.9871635046.

Adding to 1201113533 its reverse (3353111021), we get a palindrome (4554224554).

The spelling of 1201113533 in words is "one billion, two hundred one million, one hundred thirteen thousand, five hundred thirty-three".