21314400111424 has 84 divisors (see below), whose sum is σ = 49823993864640. Its totient is φ = 9019113143040.

The previous prime is 21314400111379. The next prime is 21314400111463. The reversal of 21314400111424 is 42411100441312.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 21314400111392 and 21314400111401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42769242 + ... + 43264729.

Almost surely, 2^{21314400111424} is an apocalyptic number.

It is an amenable number.

21314400111424 is an abundant number, since it is smaller than the sum of its proper divisors (28509593753216).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21314400111424 is an equidigital number, since it uses as much as digits as its factorization.

21314400111424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86034076 (or 86034059 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

Adding to 21314400111424 its reverse (42411100441312), we get a palindrome (63725500552736).

The spelling of 21314400111424 in words is "twenty-one trillion, three hundred fourteen billion, four hundred million, one hundred eleven thousand, four hundred twenty-four".