20001000122 has 4 divisors (see below), whose sum is σ = 30001500186. Its totient is φ = 10000500060.

The previous prime is 20001000109. The next prime is 20001000181. The reversal of 20001000122 is 22100010002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 16620624241 + 3380375881 = 128921^2 + 58141^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5000250029 + ... + 5000250032.

Almost surely, 2^20001000122 is an apocalyptic number.

20001000122 is a deficient number, since it is larger than the sum of its proper divisors (10000500064).

20001000122 is a wasteful number, since it uses less digits than its factorization.

20001000122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10000500063.

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

Adding to 20001000122 its reverse (22100010002), we get a palindrome (42101010124).

The spelling of 20001000122 in words is "twenty billion, one million, one hundred twenty-two", and thus it is an aban number.