11513032212421 has 4 divisors (see below), whose sum is σ = 11513630902144. Its totient is φ = 11512433522700.

The previous prime is 11513032212401. The next prime is 11513032212427. The reversal of 11513032212421 is 12421223031511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11513032212421 - 2¹¹ = 11513032210373 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11513032212421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11513032212427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 299316015 + ... + 299354476.

It is an arithmetic number, because the mean of its divisors is an integer number (2878407725536).

Almost surely, 2^{11513032212421} is an apocalyptic number.

It is an amenable number.

11513032212421 is a deficient number, since it is larger than the sum of its proper divisors (598689723).

11513032212421 is an equidigital number, since it uses as much as digits as its factorization.

11513032212421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 598689722.

The product of its (nonzero) digits is 2880, while the sum is 28.

Adding to 11513032212421 its reverse (12421223031511), we get a palindrome (23934255243932).

The spelling of 11513032212421 in words is "eleven trillion, five hundred thirteen billion, thirty-two million, two hundred twelve thousand, four hundred twenty-one".