21114424402031 has 8 divisors (see below), whose sum is σ = 21171425124960. Its totient is φ = 21057464153088.

The previous prime is 21114424402013. The next prime is 21114424402033. The reversal of 21114424402031 is 13020442441112.

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-21114424402031 is a prime.

It is a super-2 number, since 2×21114424402031² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21114424401985 and 21114424402003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21114424402033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9073586 + ... + 11160591.

It is an arithmetic number, because the mean of its divisors is an integer number (2646428140620).

Almost surely, 2^{21114424402031} is an apocalyptic number.

21114424402031 is a deficient number, since it is larger than the sum of its proper divisors (57000722929).

21114424402031 is a wasteful number, since it uses less digits than its factorization.

21114424402031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20236993.

The product of its (nonzero) digits is 6144, while the sum is 29.

Adding to 21114424402031 its reverse (13020442441112), we get a palindrome (34134866843143).

The spelling of 21114424402031 in words is "twenty-one trillion, one hundred fourteen billion, four hundred twenty-four million, four hundred two thousand, thirty-one".