20012000001 has 16 divisors (see below), whose sum is σ = 31238245248. Its totient is φ = 11156515200.

The previous prime is 20011999993. The next prime is 20012000003. The reversal of 20012000001 is 10000021002.

It is a happy number.

It is not a de Polignac number, because 20012000001 - 2³ = 20011999993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20012000003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11620510 + ... + 11622231.

It is an arithmetic number, because the mean of its divisors is an integer number (1952390328).

Almost surely, 2^20012000001 is an apocalyptic number.

20012000001 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20012000001 is a deficient number, since it is larger than the sum of its proper divisors (11226245247).

20012000001 is a wasteful number, since it uses less digits than its factorization.

20012000001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23242792.

The product of its (nonzero) digits is 4, while the sum is 6.

Adding to 20012000001 its reverse (10000021002), we get a palindrome (30012021003).

It can be divided in two parts, 2001 and 2000001, that added together give a palindrome (2002002).

The spelling of 20012000001 in words is "twenty billion, twelve million, one", and thus it is an aban number and an uban number.