2143434122121 has 16 divisors (see below), whose sum is σ = 2903491075968. Its totient is φ = 1406336064000.

The previous prime is 2143434122119. The next prime is 2143434122147. The reversal of 2143434122121 is 1212214343412.

It is a happy number.

It is not a de Polignac number, because 2143434122121 - 2¹ = 2143434122119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2143434122171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21129160 + ... + 21230361.

It is an arithmetic number, because the mean of its divisors is an integer number (181468192248).

Almost surely, 2^{2143434122121} is an apocalyptic number.

It is an amenable number.

2143434122121 is a deficient number, since it is larger than the sum of its proper divisors (760056953847).

2143434122121 is a wasteful number, since it uses less digits than its factorization.

2143434122121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42359792.

The product of its digits is 9216, while the sum is 30.

Adding to 2143434122121 its reverse (1212214343412), we get a palindrome (3355648465533).

The spelling of 2143434122121 in words is "two trillion, one hundred forty-three billion, four hundred thirty-four million, one hundred twenty-two thousand, one hundred twenty-one".