2121555141143 has 4 divisors (see below), whose sum is σ = 2178894469320. Its totient is φ = 2064215812968.

The previous prime is 2121555141133. The next prime is 2121555141179. The reversal of 2121555141143 is 3411415551212.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2121555141143 - 2²² = 2121550946839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121555141133) 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 3 ways as a sum of consecutive naturals, for example, 28669664033 + ... + 28669664106.

It is an arithmetic number, because the mean of its divisors is an integer number (544723617330).

Almost surely, 2^{2121555141143} is an apocalyptic number.

2121555141143 is a deficient number, since it is larger than the sum of its proper divisors (57339328177).

2121555141143 is an equidigital number, since it uses as much as digits as its factorization.

2121555141143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57339328176.

The product of its digits is 24000, while the sum is 35.

The spelling of 2121555141143 in words is "two trillion, one hundred twenty-one billion, five hundred fifty-five million, one hundred forty-one thousand, one hundred forty-three".