20000122211 has 4 divisors (see below), whose sum is σ = 20101645872. Its totient is φ = 19898598552.

The previous prime is 20000122201. The next prime is 20000122249. The reversal of 20000122211 is 11222100002.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20000122211 - 2³⁰ = 18926380387 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20000122192 and 20000122201.

It is not an unprimeable number, because it can be changed into a prime (20000122201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50761535 + ... + 50761928.

It is an arithmetic number, because the mean of its divisors is an integer number (5025411468).

Almost surely, 2^20000122211 is an apocalyptic number.

20000122211 is a deficient number, since it is larger than the sum of its proper divisors (101523661).

20000122211 is a wasteful number, since it uses less digits than its factorization.

20000122211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101523660.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20000122211 its reverse (11222100002), we get a palindrome (31222222213).

The spelling of 20000122211 in words is "twenty billion, one hundred twenty-two thousand, two hundred eleven".