1201110555271 has 32 divisors (see below), whose sum is σ = 1355448826368. Its totient is φ = 1054938867840.

The previous prime is 1201110555251. The next prime is 1201110555331. The reversal of 1201110555271 is 1725550111021.

It is not a de Polignac number, because 1201110555271 - 2³³ = 1192520620679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201110555251) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 178388221 + ... + 178394953.

It is an arithmetic number, because the mean of its divisors is an integer number (42357775824).

Almost surely, 2^{1201110555271} is an apocalyptic number.

1201110555271 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1201110555271 is a deficient number, since it is larger than the sum of its proper divisors (154338271097).

1201110555271 is a wasteful number, since it uses less digits than its factorization.

1201110555271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11431.

The product of its (nonzero) digits is 3500, while the sum is 31.

Adding to 1201110555271 its reverse (1725550111021), we get a palindrome (2926660666292).

The spelling of 1201110555271 in words is "one trillion, two hundred one billion, one hundred ten million, five hundred fifty-five thousand, two hundred seventy-one".