20000111100012 has 60 divisors (see below), whose sum is σ = 52285076668440. Its totient is φ = 6666597152064.

The previous prime is 20000111099999. The next prime is 20000111100037. The reversal of 20000111100012 is 21000111100002.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 20000111099967 and 20000111100003.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 21293328 + ... + 22212744.

It is an arithmetic number, because the mean of its divisors is an integer number (871417944474).

Almost surely, 2^{20000111100012} is an apocalyptic number.

It is an amenable number.

20000111100012 is an abundant number, since it is smaller than the sum of its proper divisors (32284965568428).

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

20000111100012 is a wasteful number, since it uses less digits than its factorization.

20000111100012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 986572 (or 986561 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 20000111100012 its reverse (21000111100002), we get a palindrome (41000222200014).

The spelling of 20000111100012 in words is "twenty trillion, one hundred eleven million, one hundred thousand, twelve".