1127621771 has 2 divisors, whose sum is σ = 1127621772. Its totient is φ = 1127621770.

The previous prime is 1127621753. The next prime is 1127621779. The reversal of 1127621771 is 1771267211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1127621771 - 2¹⁴ = 1127605387 is a prime.

It is not a weakly prime, because it can be changed into another prime (1127621779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 563810885 + 563810886.

It is an arithmetic number, because the mean of its divisors is an integer number (563810886).

Almost surely, 2^1127621771 is an apocalyptic number.

1127621771 is a deficient number, since it is larger than the sum of its proper divisors (1).

1127621771 is an equidigital number, since it uses as much as digits as its factorization.

1127621771 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8232, while the sum is 35.

The square root of 1127621771 is about 33580.0799731031. The cubic root of 1127621771 is about 1040.8492111593.

Adding to 1127621771 its reverse (1771267211), we get a palindrome (2898888982).

The spelling of 1127621771 in words is "one billion, one hundred twenty-seven million, six hundred twenty-one thousand, seven hundred seventy-one".