2143112143221 has 64 divisors (see below), whose sum is σ = 3819845836800. Its totient is φ = 1160083850688.

The previous prime is 2143112143201. The next prime is 2143112143243. The reversal of 2143112143221 is 1223412113412.

2143112143221 is a `hidden beast` number, since 2 + 1 + 4 + 311 + 21 + 4 + 322 + 1 = 666.

It is not a de Polignac number, because 2143112143221 - 2⁵ = 2143112143189 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2143112143201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 70824531 + ... + 70854783.

It is an arithmetic number, because the mean of its divisors is an integer number (59685091200).

Almost surely, 2^{2143112143221} is an apocalyptic number.

2143112143221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2143112143221 is a deficient number, since it is larger than the sum of its proper divisors (1676733693579).

2143112143221 is a wasteful number, since it uses less digits than its factorization.

2143112143221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50015 (or 50009 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

Adding to 2143112143221 its reverse (1223412113412), we get a palindrome (3366524256633).

It can be divided in two parts, 214311 and 2143221, that added together give a palindrome (2357532).

The spelling of 2143112143221 in words is "two trillion, one hundred forty-three billion, one hundred twelve million, one hundred forty-three thousand, two hundred twenty-one".