2122196972543 has 4 divisors (see below), whose sum is σ = 2149060225440. Its totient is φ = 2095333719648.

The previous prime is 2122196972491. The next prime is 2122196972591. The reversal of 2122196972543 is 3452796912212.

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 2122196972543 - 2¹⁸ = 2122196710399 is a prime.

It is a super-4 number, since 4×2122196972543⁴ (a number of 50 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122196972143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13431626330 + ... + 13431626487.

It is an arithmetic number, because the mean of its divisors is an integer number (537265056360).

Almost surely, 2^{2122196972543} is an apocalyptic number.

2122196972543 is a deficient number, since it is larger than the sum of its proper divisors (26863252897).

2122196972543 is an equidigital number, since it uses as much as digits as its factorization.

2122196972543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26863252896.

The product of its digits is 3265920, while the sum is 53.

The spelling of 2122196972543 in words is "two trillion, one hundred twenty-two billion, one hundred ninety-six million, nine hundred seventy-two thousand, five hundred forty-three".