11216020631 has 4 divisors (see below), whose sum is σ = 11383423992. Its totient is φ = 11048617272.

The previous prime is 11216020619. The next prime is 11216020649. The reversal of 11216020631 is 13602061211.

11216020631 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 an emirpimes, since its reverse is a distinct semiprime: 13602061211 = 13907 ⋅978073.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11216020631 is a prime.

It is a super-2 number, since 2×11216020631² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11216020597 and 11216020606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11216020601) 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, 83701580 + ... + 83701713.

It is an arithmetic number, because the mean of its divisors is an integer number (2845855998).

Almost surely, 2^11216020631 is an apocalyptic number.

11216020631 is a deficient number, since it is larger than the sum of its proper divisors (167403361).

11216020631 is an equidigital number, since it uses as much as digits as its factorization.

11216020631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167403360.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 11216020631 its reverse (13602061211), we get a palindrome (24818081842).

The spelling of 11216020631 in words is "eleven billion, two hundred sixteen million, twenty thousand, six hundred thirty-one".