1201221127 has 2 divisors, whose sum is σ = 1201221128. Its totient is φ = 1201221126.

The previous prime is 1201221107. The next prime is 1201221143. The reversal of 1201221127 is 7211221021.

It is a strong prime.

It is an emirp because it is prime and its reverse (7211221021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1201221127 - 2¹¹ = 1201219079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1201221107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600610563 + 600610564.

It is an arithmetic number, because the mean of its divisors is an integer number (600610564).

Almost surely, 2^1201221127 is an apocalyptic number.

1201221127 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201221127 is an equidigital number, since it uses as much as digits as its factorization.

1201221127 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 19.

The square root of 1201221127 is about 34658.6371197715. The cubic root of 1201221127 is about 1063.0189028373.

Adding to 1201221127 its reverse (7211221021), we get a palindrome (8412442148).

The spelling of 1201221127 in words is "one billion, two hundred one million, two hundred twenty-one thousand, one hundred twenty-seven".