1201223113 has 4 divisors (see below), whose sum is σ = 1201402260. Its totient is φ = 1201043968.

The previous prime is 1201223099. The next prime is 1201223119. The reversal of 1201223113 is 3113221021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 759718969 + 441504144 = 27563^2 + 21012^2 .

It is a cyclic number.

It is not a de Polignac number, because 1201223113 - 2⁵ = 1201223081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201223119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79108 + ... + 93061.

It is an arithmetic number, because the mean of its divisors is an integer number (300350565).

Almost surely, 2^1201223113 is an apocalyptic number.

It is an amenable number.

1201223113 is a deficient number, since it is larger than the sum of its proper divisors (179147).

1201223113 is an equidigital number, since it uses as much as digits as its factorization.

1201223113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179146.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1201223113 is about 34658.6657706265. The cubic root of 1201223113 is about 1063.0194886729.

Adding to 1201223113 its reverse (3113221021), we get a palindrome (4314444134).

The spelling of 1201223113 in words is "one billion, two hundred one million, two hundred twenty-three thousand, one hundred thirteen".