1211102221127 has 2 divisors, whose sum is σ = 1211102221128. Its totient is φ = 1211102221126.

The previous prime is 1211102221117. The next prime is 1211102221151. The reversal of 1211102221127 is 7211222011121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1211102221127 - 2¹⁴ = 1211102204743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1211102221117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605551110563 + 605551110564.

It is an arithmetic number, because the mean of its divisors is an integer number (605551110564).

Almost surely, 2^{1211102221127} is an apocalyptic number.

1211102221127 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211102221127 is an equidigital number, since it uses as much as digits as its factorization.

1211102221127 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 23.

Adding to 1211102221127 its reverse (7211222011121), we get a palindrome (8422324232248).

The spelling of 1211102221127 in words is "one trillion, two hundred eleven billion, one hundred two million, two hundred twenty-one thousand, one hundred twenty-seven".