11123222013421 has 16 divisors (see below), whose sum is σ = 12739139344000. Its totient is φ = 9514030322880.

The previous prime is 11123222013413. The next prime is 11123222013439. The reversal of 11123222013421 is 12431022232111.

It is a cyclic number.

It is not a de Polignac number, because 11123222013421 - 2³ = 11123222013413 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 (11123222013461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32232931 + ... + 32576191.

It is an arithmetic number, because the mean of its divisors is an integer number (796196209000).

Almost surely, 2^{11123222013421} is an apocalyptic number.

It is an amenable number.

11123222013421 is a deficient number, since it is larger than the sum of its proper divisors (1615917330579).

11123222013421 is an equidigital number, since it uses as much as digits as its factorization.

11123222013421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353044.

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 11123222013421 its reverse (12431022232111), we get a palindrome (23554244245532).

The spelling of 11123222013421 in words is "eleven trillion, one hundred twenty-three billion, two hundred twenty-two million, thirteen thousand, four hundred twenty-one".