11231423220021 has 8 divisors (see below), whose sum is σ = 15075735866400. Its totient is φ = 7437363026832.

The previous prime is 11231423219963. The next prime is 11231423220053. The reversal of 11231423220021 is 12002232413211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11231423220021 - 2¹⁵ = 11231423187253 is a prime.

It is a super-2 number, since 2×11231423220021² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11231423219973 and 11231423220000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11231423220221) 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 7 ways as a sum of consecutive naturals, for example, 12563112775 + ... + 12563113668.

It is an arithmetic number, because the mean of its divisors is an integer number (1884466983300).

Almost surely, 2^{11231423220021} is an apocalyptic number.

It is an amenable number.

11231423220021 is a deficient number, since it is larger than the sum of its proper divisors (3844312646379).

11231423220021 is a wasteful number, since it uses less digits than its factorization.

11231423220021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25126226595.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 11231423220021 its reverse (12002232413211), we get a palindrome (23233655633232).

The spelling of 11231423220021 in words is "eleven trillion, two hundred thirty-one billion, four hundred twenty-three million, two hundred twenty thousand, twenty-one".