2123131022219 has 4 divisors (see below), whose sum is σ = 2123558474544. Its totient is φ = 2122703569896.

The previous prime is 2123131022197. The next prime is 2123131022237. The reversal of 2123131022219 is 9122201313212.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2123131022219 is a prime.

It is a super-2 number, since 2×2123131022219² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2123131022191 and 2123131022200.

It is not an unprimeable number, because it can be changed into a prime (2123131022119) 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, 213718712 + ... + 213728645.

It is an arithmetic number, because the mean of its divisors is an integer number (530889618636).

Almost surely, 2^{2123131022219} is an apocalyptic number.

2123131022219 is a deficient number, since it is larger than the sum of its proper divisors (427452325).

2123131022219 is an equidigital number, since it uses as much as digits as its factorization.

2123131022219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427452324.

The product of its (nonzero) digits is 2592, while the sum is 29.

The spelling of 2123131022219 in words is "two trillion, one hundred twenty-three billion, one hundred thirty-one million, twenty-two thousand, two hundred nineteen".