11212002013 has 4 divisors (see below), whose sum is σ = 11212213788. Its totient is φ = 11211790240.

The previous prime is 11212002007. The next prime is 11212002023. The reversal of 11212002013 is 31020021211.

11212002013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 31020021211 = 1531 ⋅20261281.

It can be written as a sum of positive squares in 2 ways, for example, as 4122025209 + 7089976804 = 64203^2 + 84202^2 .

It is a cyclic number.

It is not a de Polignac number, because 11212002013 - 2⁹ = 11212001501 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11212001984 and 11212002002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11212002023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52593 + ... + 158713.

It is an arithmetic number, because the mean of its divisors is an integer number (2803053447).

Almost surely, 2^11212002013 is an apocalyptic number.

It is an amenable number.

11212002013 is a deficient number, since it is larger than the sum of its proper divisors (211775).

11212002013 is a wasteful number, since it uses less digits than its factorization.

11212002013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211774.

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

Adding to 11212002013 its reverse (31020021211), we get a palindrome (42232023224).

The spelling of 11212002013 in words is "eleven billion, two hundred twelve million, two thousand, thirteen".