1011211012271 has 2 divisors, whose sum is σ = 1011211012272. Its totient is φ = 1011211012270.

The previous prime is 1011211012187. The next prime is 1011211012333. The reversal of 1011211012271 is 1722101121101.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1011211012271 - 2¹⁴ = 1011210995887 is a prime.

It is a super-2 number, since 2×1011211012271² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1011211002271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505605506135 + 505605506136.

It is an arithmetic number, because the mean of its divisors is an integer number (505605506136).

Almost surely, 2^{1011211012271} is an apocalyptic number.

1011211012271 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011211012271 is an equidigital number, since it uses as much as digits as its factorization.

1011211012271 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 1011211012271 its reverse (1722101121101), we get a palindrome (2733312133372).

The spelling of 1011211012271 in words is "one trillion, eleven billion, two hundred eleven million, twelve thousand, two hundred seventy-one".