2143423421101 has 4 divisors (see below), whose sum is σ = 2269507151772. Its totient is φ = 2017339690432.

The previous prime is 2143423421089. The next prime is 2143423421123. The reversal of 2143423421101 is 1011243243412.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1574651032201 + 568772388900 = 1254851^2 + 754170^2 .

It is a cyclic number.

It is not a de Polignac number, because 2143423421101 - 2²⁷ = 2143289203373 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2143423421101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2143423421401) 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, 63041865310 + ... + 63041865343.

It is an arithmetic number, because the mean of its divisors is an integer number (567376787943).

Almost surely, 2^{2143423421101} is an apocalyptic number.

It is an amenable number.

2143423421101 is a deficient number, since it is larger than the sum of its proper divisors (126083730671).

2143423421101 is a wasteful number, since it uses less digits than its factorization.

2143423421101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126083730670.

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 2143423421101 its reverse (1011243243412), we get a palindrome (3154666664513).

The spelling of 2143423421101 in words is "two trillion, one hundred forty-three billion, four hundred twenty-three million, four hundred twenty-one thousand, one hundred one".