21126314144343 has 4 divisors (see below), whose sum is σ = 28168418859128. Its totient is φ = 14084209429560.

The previous prime is 21126314144323. The next prime is 21126314144347. The reversal of 21126314144343 is 34344141362112.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 21126314144343 - 2¹⁴ = 21126314127959 is a prime.

It is a super-2 number, since 2×21126314144343² (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 (21126314144347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3521052357388 + ... + 3521052357393.

It is an arithmetic number, because the mean of its divisors is an integer number (7042104714782).

Almost surely, 2^{21126314144343} is an apocalyptic number.

21126314144343 is a deficient number, since it is larger than the sum of its proper divisors (7042104714785).

21126314144343 is an equidigital number, since it uses as much as digits as its factorization.

21126314144343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7042104714784.

The product of its digits is 165888, while the sum is 39.

The spelling of 21126314144343 in words is "twenty-one trillion, one hundred twenty-six billion, three hundred fourteen million, one hundred forty-four thousand, three hundred forty-three".