11261202013 has 4 divisors (see below), whose sum is σ = 11336780700. Its totient is φ = 11185623328.

The previous prime is 11261201981. The next prime is 11261202023. The reversal of 11261202013 is 31020216211.

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 946362169 + 10314839844 = 30763^2 + 101562^2 .

It is a cyclic number.

It is not a de Polignac number, because 11261202013 - 2⁵ = 11261201981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11261202023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37789120 + ... + 37789417.

It is an arithmetic number, because the mean of its divisors is an integer number (2834195175).

Almost surely, 2^11261202013 is an apocalyptic number.

It is an amenable number.

11261202013 is a deficient number, since it is larger than the sum of its proper divisors (75578687).

11261202013 is an equidigital number, since it uses as much as digits as its factorization.

11261202013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75578686.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 11261202013 its reverse (31020216211), we get a palindrome (42281418224).

The spelling of 11261202013 in words is "eleven billion, two hundred sixty-one million, two hundred two thousand, thirteen".