2112547469 has 2 divisors, whose sum is σ = 2112547470. Its totient is φ = 2112547468.

The previous prime is 2112547417. The next prime is 2112547487. The reversal of 2112547469 is 9647452112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2112505444 + 42025 = 45962^2 + 205^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2112547469 is a prime.

It is a super-2 number, since 2×2112547469² = 8925713617556611922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2112547069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056273734 + 1056273735.

It is an arithmetic number, because the mean of its divisors is an integer number (1056273735).

Almost surely, 2^2112547469 is an apocalyptic number.

It is an amenable number.

2112547469 is a deficient number, since it is larger than the sum of its proper divisors (1).

2112547469 is an equidigital number, since it uses as much as digits as its factorization.

2112547469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 41.

The square root of 2112547469 is about 45962.4571688677. The cubic root of 2112547469 is about 1283.1245826235.

The spelling of 2112547469 in words is "two billion, one hundred twelve million, five hundred forty-seven thousand, four hundred sixty-nine".