1101121279 has 2 divisors, whose sum is σ = 1101121280. Its totient is φ = 1101121278.

The previous prime is 1101121277. The next prime is 1101121337. The reversal of 1101121279 is 9721211011.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1101121279 - 2¹ = 1101121277 is a prime.

Together with 1101121277, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1101121277) 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, 550560639 + 550560640.

It is an arithmetic number, because the mean of its divisors is an integer number (550560640).

Almost surely, 2^1101121279 is an apocalyptic number.

1101121279 is a deficient number, since it is larger than the sum of its proper divisors (1).

1101121279 is an equidigital number, since it uses as much as digits as its factorization.

1101121279 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252, while the sum is 25.

The square root of 1101121279 is about 33183.1475149661. The cubic root of 1101121279 is about 1032.6307460472.

The spelling of 1101121279 in words is "one billion, one hundred one million, one hundred twenty-one thousand, two hundred seventy-nine".