20001111011120 has 40 divisors (see below), whose sum is σ = 47379990339216. Its totient is φ = 7849492621568.

The previous prime is 20001111011113. The next prime is 20001111011149. The reversal of 20001111011120 is 2111011110002.

It is a tau number, because it is divible by the number of its divisors (40).

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, 2358617342 + ... + 2358625821.

Almost surely, 2^{20001111011120} is an apocalyptic number.

20001111011120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20001111011120 is an abundant number, since it is smaller than the sum of its proper divisors (27378879328096).

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

20001111011120 is a wasteful number, since it uses less digits than its factorization.

20001111011120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4717243229 (or 4717243223 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 20001111011120 its reverse (2111011110002), we get a palindrome (22112122121122).

The spelling of 20001111011120 in words is "twenty trillion, one billion, one hundred eleven million, eleven thousand, one hundred twenty".