1123215755500 has 24 divisors (see below), whose sum is σ = 2453103211104. Its totient is φ = 449286302000.

The previous prime is 1123215755491. The next prime is 1123215755551. The reversal of 1123215755500 is 55575123211.

It is a super-2 number, since 2×1123215755500² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1123215755500.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1123215256 + ... + 1123216255.

It is an arithmetic number, because the mean of its divisors is an integer number (102212633796).

Almost surely, 2^{1123215755500} is an apocalyptic number.

1123215755500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1123215755500 is an abundant number, since it is smaller than the sum of its proper divisors (1329887455604).

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

1123215755500 is a wasteful number, since it uses less digits than its factorization.

1123215755500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2246431530 (or 2246431518 counting only the distinct ones).

The product of its (nonzero) digits is 52500, while the sum is 37.

The spelling of 1123215755500 in words is "one trillion, one hundred twenty-three billion, two hundred fifteen million, seven hundred fifty-five thousand, five hundred".