20122000001 has 8 divisors (see below), whose sum is σ = 20855831400. Its totient is φ = 19390833280.

The previous prime is 20121999991. The next prime is 20122000007. The reversal of 20122000001 is 10000022102.

It can be written as a sum of positive squares in 4 ways, for example, as 3549299776 + 16572700225 = 59576^2 + 128735^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20122000001 - 2²⁶ = 20054891137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20122000007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 650786 + ... + 681003.

It is an arithmetic number, because the mean of its divisors is an integer number (2606978925).

Almost surely, 2^20122000001 is an apocalyptic number.

It is an amenable number.

20122000001 is a deficient number, since it is larger than the sum of its proper divisors (733831399).

20122000001 is a wasteful number, since it uses less digits than its factorization.

20122000001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1332339.

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

Adding to 20122000001 its reverse (10000022102), we get a palindrome (30122022103).

The spelling of 20122000001 in words is "twenty billion, one hundred twenty-two million, one", and thus it is an aban number.