11453501212421 has 4 divisors (see below), whose sum is σ = 11453581611744. Its totient is φ = 11453420813100.

The previous prime is 11453501212399. The next prime is 11453501212493. The reversal of 11453501212421 is 12421210535411.

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 11453501212421 - 2³⁸ = 11178623305477 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 (11453503212421) 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 3 ways as a sum of consecutive naturals, for example, 39985595 + ... + 40271016.

It is an arithmetic number, because the mean of its divisors is an integer number (2863395402936).

Almost surely, 2^{11453501212421} is an apocalyptic number.

It is an amenable number.

11453501212421 is a deficient number, since it is larger than the sum of its proper divisors (80399323).

11453501212421 is an equidigital number, since it uses as much as digits as its factorization.

11453501212421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80399322.

The product of its (nonzero) digits is 9600, while the sum is 32.

Adding to 11453501212421 its reverse (12421210535411), we get a palindrome (23874711747832).

The spelling of 11453501212421 in words is "eleven trillion, four hundred fifty-three billion, five hundred one million, two hundred twelve thousand, four hundred twenty-one".