20011100012 has 6 divisors (see below), whose sum is σ = 35019425028. Its totient is φ = 10005550004.

The previous prime is 20011099981. The next prime is 20011100023. The reversal of 20011100012 is 21000111002.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2501387498 + ... + 2501387505.

It is an arithmetic number, because the mean of its divisors is an integer number (5836570838).

Almost surely, 2^20011100012 is an apocalyptic number.

It is an amenable number.

20011100012 is a deficient number, since it is larger than the sum of its proper divisors (15008325016).

20011100012 is a wasteful number, since it uses less digits than its factorization.

20011100012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5002775007 (or 5002775005 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 20011100012 its reverse (21000111002), we get a palindrome (41011211014).

The spelling of 20011100012 in words is "twenty billion, eleven million, one hundred thousand, twelve".