11212421013 has 12 divisors (see below), whose sum is σ = 16197987520. Its totient is φ = 7473900456.

The previous prime is 11212420997. The next prime is 11212421027. The reversal of 11212421013 is 31012421211.

It is not a de Polignac number, because 11212421013 - 2⁴ = 11212420997 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 (11212421063) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16381 + ... + 150642.

Almost surely, 2^11212421013 is an apocalyptic number.

It is an amenable number.

11212421013 is a deficient number, since it is larger than the sum of its proper divisors (4985566507).

11212421013 is a wasteful number, since it uses less digits than its factorization.

11212421013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174488 (or 174485 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 11212421013 its reverse (31012421211), we get a palindrome (42224842224).

The spelling of 11212421013 in words is "eleven billion, two hundred twelve million, four hundred twenty-one thousand, thirteen".