2111113451 has 2 divisors, whose sum is σ = 2111113452. Its totient is φ = 2111113450.

The previous prime is 2111113387. The next prime is 2111113453. The reversal of 2111113451 is 1543111112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2111113451 - 2⁶ = 2111113387 is a prime.

It is a super-4 number, since 4×2111113451⁴ (a number of 38 digits) contains 4444 as substring.

Together with 2111113453, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2111113453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055556725 + 1055556726.

It is an arithmetic number, because the mean of its divisors is an integer number (1055556726).

Almost surely, 2^2111113451 is an apocalyptic number.

2111113451 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111113451 is an equidigital number, since it uses as much as digits as its factorization.

2111113451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120, while the sum is 20.

The square root of 2111113451 is about 45946.8546366343. The cubic root of 2111113451 is about 1282.8341843762.

Adding to 2111113451 its reverse (1543111112), we get a palindrome (3654224563).

The spelling of 2111113451 in words is "two billion, one hundred eleven million, one hundred thirteen thousand, four hundred fifty-one".