1121560605 has 24 divisors (see below), whose sum is σ = 2120770080. Its totient is φ = 543786720.

The previous prime is 1121560589. The next prime is 1121560621. The reversal of 1121560605 is 5060651211.

It is a happy number.

1121560605 is a `hidden beast` number, since 1 + 1 + 2 + 1 + 56 + 0 + 605 = 666.

It is an interprime number because it is at equal distance from previous prime (1121560589) and next prime (1121560621).

It is not a de Polignac number, because 1121560605 - 2⁴ = 1121560589 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1132395 + ... + 1133384.

It is an arithmetic number, because the mean of its divisors is an integer number (88365420).

Almost surely, 2^1121560605 is an apocalyptic number.

1121560605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1121560605 is a deficient number, since it is larger than the sum of its proper divisors (999209475).

1121560605 is a wasteful number, since it uses less digits than its factorization.

1121560605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2265801 (or 2265798 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The square root of 1121560605 is about 33489.7089417033. The cubic root of 1121560605 is about 1038.9809436679.

The spelling of 1121560605 in words is "one billion, one hundred twenty-one million, five hundred sixty thousand, six hundred five".