1122143871 has 16 divisors (see below), whose sum is σ = 1585039968. Its totient is φ = 703718400.

The previous prime is 1122143851. The next prime is 1122143879. The reversal of 1122143871 is 1783412211.

It is not a de Polignac number, because 1122143871 - 2⁵ = 1122143839 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122143879) 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 in 15 ways as a sum of consecutive naturals, for example, 116811 + ... + 126051.

It is an arithmetic number, because the mean of its divisors is an integer number (99064998).

Almost surely, 2^1122143871 is an apocalyptic number.

1122143871 is a deficient number, since it is larger than the sum of its proper divisors (462896097).

1122143871 is a wasteful number, since it uses less digits than its factorization.

1122143871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11642.

The product of its digits is 2688, while the sum is 30.

The square root of 1122143871 is about 33498.4159476236. The cubic root of 1122143871 is about 1039.1610193103.

The spelling of 1122143871 in words is "one billion, one hundred twenty-two million, one hundred forty-three thousand, eight hundred seventy-one".