1011211221127 has 2 divisors, whose sum is σ = 1011211221128. Its totient is φ = 1011211221126.

The previous prime is 1011211221043. The next prime is 1011211221151. The reversal of 1011211221127 is 7211221121101.

It is a strong prime.

It is an emirp because it is prime and its reverse (7211221121101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1011211221127 - 2³⁹ = 461455407239 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1011211221098 and 1011211221107.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1021211221127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505605610563 + 505605610564.

It is an arithmetic number, because the mean of its divisors is an integer number (505605610564).

Almost surely, 2^{1011211221127} is an apocalyptic number.

1011211221127 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011211221127 is an equidigital number, since it uses as much as digits as its factorization.

1011211221127 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112, while the sum is 22.

Adding to 1011211221127 its reverse (7211221121101), we get a palindrome (8222432342228).

The spelling of 1011211221127 in words is "one trillion, eleven billion, two hundred eleven million, two hundred twenty-one thousand, one hundred twenty-seven".