1123211110872 has 32 divisors (see below), whose sum is σ = 2973205882800. Its totient is φ = 352379956224.

The previous prime is 1123211110843. The next prime is 1123211110873. The reversal of 1123211110872 is 2780111123211.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123211110873) 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 7 ways as a sum of consecutive naturals, for example, 1376483797 + ... + 1376484612.

Almost surely, 2^{1123211110872} is an apocalyptic number.

1123211110872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1123211110872 is an abundant number, since it is smaller than the sum of its proper divisors (1849994771928).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1123211110872 is a wasteful number, since it uses less digits than its factorization.

1123211110872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2752968435 (or 2752968431 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 30.

The spelling of 1123211110872 in words is "one trillion, one hundred twenty-three billion, two hundred eleven million, one hundred ten thousand, eight hundred seventy-two".