1121061871 has 2 divisors, whose sum is σ = 1121061872. Its totient is φ = 1121061870.

The previous prime is 1121061863. The next prime is 1121061899. The reversal of 1121061871 is 1781601211.

It is an a-pointer prime, because the next prime (1121061899) can be obtained adding 1121061871 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1121061871 - 2³ = 1121061863 is a prime.

It is a super-2 number, since 2×1121061871² = 2513559437220041282, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121061371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560530935 + 560530936.

It is an arithmetic number, because the mean of its divisors is an integer number (560530936).

Almost surely, 2^1121061871 is an apocalyptic number.

1121061871 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121061871 is an equidigital number, since it uses as much as digits as its factorization.

1121061871 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 28.

The square root of 1121061871 is about 33482.2620352927. The cubic root of 1121061871 is about 1038.8269166376.

The spelling of 1121061871 in words is "one billion, one hundred twenty-one million, sixty-one thousand, eight hundred seventy-one".