1127736221 has 2 divisors, whose sum is σ = 1127736222. Its totient is φ = 1127736220.

The previous prime is 1127736143. The next prime is 1127736229. The reversal of 1127736221 is 1226377211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 876988996 + 250747225 = 29614^2 + 15835^2 .

It is a cyclic number.

It is not a de Polignac number, because 1127736221 - 2¹⁰ = 1127735197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1127736229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 563868110 + 563868111.

It is an arithmetic number, because the mean of its divisors is an integer number (563868111).

Almost surely, 2^1127736221 is an apocalyptic number.

It is an amenable number.

1127736221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1127736221 is an equidigital number, since it uses as much as digits as its factorization.

1127736221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7056, while the sum is 32.

The square root of 1127736221 is about 33581.7840651744. The cubic root of 1127736221 is about 1040.8844242556.

The spelling of 1127736221 in words is "one billion, one hundred twenty-seven million, seven hundred thirty-six thousand, two hundred twenty-one".