1201202113 has 4 divisors (see below), whose sum is σ = 1204422868. Its totient is φ = 1197981360.

The previous prime is 1201202087. The next prime is 1201202147. The reversal of 1201202113 is 3112021021.

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 366454449 + 834747664 = 19143^2 + 28892^2 .

It is a cyclic number.

It is not a de Polignac number, because 1201202113 - 2²¹ = 1199104961 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1201202093 and 1201202102.

It is not an unprimeable number, because it can be changed into a prime (1201202183) 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, 1609818 + ... + 1610563.

It is an arithmetic number, because the mean of its divisors is an integer number (301105717).

Almost surely, 2^1201202113 is an apocalyptic number.

It is an amenable number.

1201202113 is a deficient number, since it is larger than the sum of its proper divisors (3220755).

1201202113 is an equidigital number, since it uses as much as digits as its factorization.

1201202113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3220754.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1201202113 is about 34658.3628147667. The cubic root of 1201202113 is about 1063.0132940038.

Adding to 1201202113 its reverse (3112021021), we get a palindrome (4313223134).

The spelling of 1201202113 in words is "one billion, two hundred one million, two hundred two thousand, one hundred thirteen".