21240141223 has 8 divisors (see below), whose sum is σ = 25329858048. Its totient is φ = 17414277144.

The previous prime is 21240141217. The next prime is 21240141233. The reversal of 21240141223 is 32214104212.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21240141223 is a prime.

It is a super-2 number, since 2×21240141223² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21240141194 and 21240141203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21240141233) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 65963011 + ... + 65963332.

It is an arithmetic number, because the mean of its divisors is an integer number (3166232256).

Almost surely, 2^21240141223 is an apocalyptic number.

21240141223 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

21240141223 is a deficient number, since it is larger than the sum of its proper divisors (4089716825).

21240141223 is a wasteful number, since it uses less digits than its factorization.

21240141223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131926373.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 21240141223 its reverse (32214104212), we get a palindrome (53454245435).

The spelling of 21240141223 in words is "twenty-one billion, two hundred forty million, one hundred forty-one thousand, two hundred twenty-three".