21113124340031 has 8 divisors (see below), whose sum is σ = 21684036977520. Its totient is φ = 20542226842368.

The previous prime is 21113124340003. The next prime is 21113124340097. The reversal of 21113124340031 is 13004342131112.

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

It is not a de Polignac number, because 21113124340031 - 2¹⁴ = 21113124323647 is a prime.

It is a super-2 number, since 2×21113124340031² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21113124330031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 929426 + ... + 6564303.

It is an arithmetic number, because the mean of its divisors is an integer number (2710504622190).

Almost surely, 2^{21113124340031} is an apocalyptic number.

21113124340031 is a deficient number, since it is larger than the sum of its proper divisors (570912637489).

21113124340031 is an equidigital number, since it uses as much as digits as its factorization.

21113124340031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7569913.

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 21113124340031 its reverse (13004342131112), we get a palindrome (34117466471143).

The spelling of 21113124340031 in words is "twenty-one trillion, one hundred thirteen billion, one hundred twenty-four million, three hundred forty thousand, thirty-one".