11212422013 has 16 divisors (see below), whose sum is σ = 12194551600. Its totient is φ = 10247523840.

The previous prime is 11212421999. The next prime is 11212422041. The reversal of 11212422013 is 31022421211.

It can be written as a sum of positive squares in 8 ways, for example, as 1329477444 + 9882944569 = 36462^2 + 99413^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11212422013 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 (11212422083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3230443 + ... + 3233911.

It is an arithmetic number, because the mean of its divisors is an integer number (762159475).

Almost surely, 2^11212422013 is an apocalyptic number.

11212422013 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

11212422013 is a deficient number, since it is larger than the sum of its proper divisors (982129587).

11212422013 is a wasteful number, since it uses less digits than its factorization.

11212422013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5872.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 11212422013 its reverse (31022421211), we get a palindrome (42234843224).

The spelling of 11212422013 in words is "eleven billion, two hundred twelve million, four hundred twenty-two thousand, thirteen".