1011201271 has 2 divisors, whose sum is σ = 1011201272. Its totient is φ = 1011201270.

The previous prime is 1011201263. The next prime is 1011201281. The reversal of 1011201271 is 1721021101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1011201271 - 2³ = 1011201263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1011201211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505600635 + 505600636.

It is an arithmetic number, because the mean of its divisors is an integer number (505600636).

Almost surely, 2^1011201271 is an apocalyptic number.

1011201271 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011201271 is an equidigital number, since it uses as much as digits as its factorization.

1011201271 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28, while the sum is 16.

The square root of 1011201271 is about 31799.3910476286. The cubic root of 1011201271 is about 1003.7199021696.

Adding to 1011201271 its reverse (1721021101), we get a palindrome (2732222372).

The spelling of 1011201271 in words is "one billion, eleven million, two hundred one thousand, two hundred seventy-one".