1121656267 has 2 divisors, whose sum is σ = 1121656268. Its totient is φ = 1121656266.

The previous prime is 1121656219. The next prime is 1121656271. The reversal of 1121656267 is 7626561211.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1121656267 is a prime.

It is a super-2 number, since 2×1121656267² = 2516225562600750578, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1121656297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560828133 + 560828134.

It is an arithmetic number, because the mean of its divisors is an integer number (560828134).

Almost surely, 2^1121656267 is an apocalyptic number.

1121656267 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121656267 is an equidigital number, since it uses as much as digits as its factorization.

1121656267 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 37.

The square root of 1121656267 is about 33491.1371410408. The cubic root of 1121656267 is about 1039.0104823212.

The spelling of 1121656267 in words is "one billion, one hundred twenty-one million, six hundred fifty-six thousand, two hundred sixty-seven".