20012122211 has 8 divisors (see below), whose sum is σ = 20135467920. Its totient is φ = 19888864992.

The previous prime is 20012122177. The next prime is 20012122223. The reversal of 20012122211 is 11222121002.

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 20012122211 - 2⁶ = 20012122147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20012122111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 464285 + ... + 505553.

It is an arithmetic number, because the mean of its divisors is an integer number (2516933490).

Almost surely, 2^20012122211 is an apocalyptic number.

20012122211 is a deficient number, since it is larger than the sum of its proper divisors (123345709).

20012122211 is a wasteful number, since it uses less digits than its factorization.

20012122211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44245.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20012122211 its reverse (11222121002), we get a palindrome (31234243213).

It can be divided in two parts, 2001 and 2122211, that added together give a palindrome (2124212).

The spelling of 20012122211 in words is "twenty billion, twelve million, one hundred twenty-two thousand, two hundred eleven".