20120010001 has 24 divisors (see below), whose sum is σ = 25218332160. Its totient is φ = 15910890912.

The previous prime is 20120009981. The next prime is 20120010007. The reversal of 20120010001 is 10001002102.

It is not a de Polignac number, because 20120010001 - 2¹⁵ = 20119977233 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (7).

It is not an unprimeable number, because it can be changed into a prime (20120010007) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1419190 + ... + 1433296.

It is an arithmetic number, because the mean of its divisors is an integer number (1050763840).

Almost surely, 2^20120010001 is an apocalyptic number.

It is an amenable number.

20120010001 is a deficient number, since it is larger than the sum of its proper divisors (5098322159).

20120010001 is a wasteful number, since it uses less digits than its factorization.

20120010001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16373 (or 16366 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 20120010001 its reverse (10001002102), we get a palindrome (30121012103).

It can be divided in two parts, 20 and 120010001, that added together give a palindrome (120010021).

The spelling of 20120010001 in words is "twenty billion, one hundred twenty million, ten thousand, one".