1201111102271 has 2 divisors, whose sum is σ = 1201111102272. Its totient is φ = 1201111102270.

The previous prime is 1201111102207. The next prime is 1201111102277. The reversal of 1201111102271 is 1722011111021.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (1722011111021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1201111102271 - 2⁶ = 1201111102207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1201111102277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600555551135 + 600555551136.

It is an arithmetic number, because the mean of its divisors is an integer number (600555551136).

Almost surely, 2^{1201111102271} is an apocalyptic number.

1201111102271 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201111102271 is an equidigital number, since it uses as much as digits as its factorization.

1201111102271 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56, while the sum is 20.

Adding to 1201111102271 its reverse (1722011111021), we get a palindrome (2923122213292).

The spelling of 1201111102271 in words is "one trillion, two hundred one billion, one hundred eleven million, one hundred two thousand, two hundred seventy-one".