20000111211120 has 80 divisors (see below), whose sum is σ = 64138287699360. Its totient is φ = 5149453919232.

The previous prime is 20000111211109. The next prime is 20000111211167. The reversal of 20000111211120 is 2111211100002.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 20000111211096 and 20000111211105.

It is a congruent number.

It is an unprimeable number.

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, 1436782639 + ... + 1436796558.

It is an arithmetic number, because the mean of its divisors is an integer number (801728596242).

Almost surely, 2^{20000111211120} is an apocalyptic number.

20000111211120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20000111211120 is an abundant number, since it is smaller than the sum of its proper divisors (44138176488240).

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

20000111211120 is a wasteful number, since it uses less digits than its factorization.

20000111211120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2873579242 (or 2873579236 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 20000111211120 its reverse (2111211100002), we get a palindrome (22111322311122).

The spelling of 20000111211120 in words is "twenty trillion, one hundred eleven million, two hundred eleven thousand, one hundred twenty".