11123213110020 has 144 divisors (see below), whose sum is σ = 37054756065600. Its totient is φ = 2678438880000.

The previous prime is 11123213109979. The next prime is 11123213110039. The reversal of 11123213110020 is 2001131232111.

11123213110020 is a `hidden beast` number, since 1 + 1 + 12 + 321 + 311 + 0 + 0 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 11123213109975 and 11123213110002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18556606 + ... + 19146645.

It is an arithmetic number, because the mean of its divisors is an integer number (257324694900).

Almost surely, 2^{11123213110020} is an apocalyptic number.

11123213110020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11123213110020 is an abundant number, since it is smaller than the sum of its proper divisors (25931542955580).

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

11123213110020 is a wasteful number, since it uses less digits than its factorization.

11123213110020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37703426 (or 37703421 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 11123213110020 its reverse (2001131232111), we get a palindrome (13124344342131).

The spelling of 11123213110020 in words is "eleven trillion, one hundred twenty-three billion, two hundred thirteen million, one hundred ten thousand, twenty".