21223111413124 has 12 divisors (see below), whose sum is σ = 37151495411548. Its totient is φ = 10608398438400.

The previous prime is 21223111413043. The next prime is 21223111413211. The reversal of 21223111413124 is 42131411132212.

It can be written as a sum of positive squares in 2 ways, for example, as 8738125185024 + 12484986228100 = 2956032^2 + 3533410^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21223111413092 and 21223111413101.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 789301917 + ... + 789328804.

Almost surely, 2^{21223111413124} is an apocalyptic number.

It is an amenable number.

21223111413124 is a deficient number, since it is larger than the sum of its proper divisors (15928383998424).

21223111413124 is a wasteful number, since it uses less digits than its factorization.

21223111413124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1578634086 (or 1578634084 counting only the distinct ones).

The product of its digits is 2304, while the sum is 28.

Adding to 21223111413124 its reverse (42131411132212), we get a palindrome (63354522545336).

The spelling of 21223111413124 in words is "twenty-one trillion, two hundred twenty-three billion, one hundred eleven million, four hundred thirteen thousand, one hundred twenty-four".