21142313244143 has 16 divisors (see below), whose sum is σ = 26049079586880. Its totient is φ = 16710131333376.

The previous prime is 21142313244071. The next prime is 21142313244163. The reversal of 21142313244143 is 34144231324112.

It is not a de Polignac number, because 21142313244143 - 2¹⁰ = 21142313243119 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21142313244163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123891848 + ... + 124062381.

It is an arithmetic number, because the mean of its divisors is an integer number (1628067474180).

Almost surely, 2^{21142313244143} is an apocalyptic number.

21142313244143 is a deficient number, since it is larger than the sum of its proper divisors (4906766342737).

21142313244143 is a wasteful number, since it uses less digits than its factorization.

21142313244143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247955186.

The product of its digits is 55296, while the sum is 35.

Adding to 21142313244143 its reverse (34144231324112), we get a palindrome (55286544568255).

The spelling of 21142313244143 in words is "twenty-one trillion, one hundred forty-two billion, three hundred thirteen million, two hundred forty-four thousand, one hundred forty-three".