11222421143 has 4 divisors (see below), whose sum is σ = 11269377120. Its totient is φ = 11175465168.

The previous prime is 11222421139. The next prime is 11222421173. The reversal of 11222421143 is 34112422211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34112422211 = 7 ⋅4873203173.

It is a cyclic number.

It is not a de Polignac number, because 11222421143 - 2² = 11222421139 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 (11222421173) 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, 23477630 + ... + 23478107.

It is an arithmetic number, because the mean of its divisors is an integer number (2817344280).

Almost surely, 2^11222421143 is an apocalyptic number.

11222421143 is a deficient number, since it is larger than the sum of its proper divisors (46955977).

11222421143 is an equidigital number, since it uses as much as digits as its factorization.

11222421143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46955976.

The product of its digits is 768, while the sum is 23.

Adding to 11222421143 its reverse (34112422211), we get a palindrome (45334843354).

The spelling of 11222421143 in words is "eleven billion, two hundred twenty-two million, four hundred twenty-one thousand, one hundred forty-three".