2111121343 has 2 divisors, whose sum is σ = 2111121344. Its totient is φ = 2111121342.

The previous prime is 2111121317. The next prime is 2111121349. The reversal of 2111121343 is 3431211112.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2111121343 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2111121343.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2111121349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055560671 + 1055560672.

It is an arithmetic number, because the mean of its divisors is an integer number (1055560672).

Almost surely, 2^2111121343 is an apocalyptic number.

2111121343 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111121343 is an equidigital number, since it uses as much as digits as its factorization.

2111121343 is an evil number, because the sum of its binary digits is even.

The product of its digits is 144, while the sum is 19.

The square root of 2111121343 is about 45946.9405183849. The cubic root of 2111121343 is about 1282.8357829189.

Adding to 2111121343 its reverse (3431211112), we get a palindrome (5542332455).

The spelling of 2111121343 in words is "two billion, one hundred eleven million, one hundred twenty-one thousand, three hundred forty-three".