1205075011 has 4 divisors (see below), whose sum is σ = 1377228592. Its totient is φ = 1032921432.

The previous prime is 1205074999. The next prime is 1205075029. The reversal of 1205075011 is 1105705021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1205075011 - 2⁷ = 1205074883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1205070011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86076780 + ... + 86076793.

It is an arithmetic number, because the mean of its divisors is an integer number (344307148).

Almost surely, 2^1205075011 is an apocalyptic number.

1205075011 is a deficient number, since it is larger than the sum of its proper divisors (172153581).

1205075011 is an equidigital number, since it uses as much as digits as its factorization.

1205075011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172153580.

The product of its (nonzero) digits is 350, while the sum is 22.

The square root of 1205075011 is about 34714.1903405509. The cubic root of 1205075011 is about 1064.1545189288.

The spelling of 1205075011 in words is "one billion, two hundred five million, seventy-five thousand, eleven".