20012012211 has 8 divisors (see below), whose sum is σ = 27543414784. Its totient is φ = 12910975560.

The previous prime is 20012012161. The next prime is 20012012227. The reversal of 20012012211 is 11221021002.

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

It is not a de Polignac number, because 20012012211 - 2⁹ = 20012011699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20012012011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107591371 + ... + 107591556.

It is an arithmetic number, because the mean of its divisors is an integer number (3442926848).

Almost surely, 2^20012012211 is an apocalyptic number.

20012012211 is a deficient number, since it is larger than the sum of its proper divisors (7531402573).

20012012211 is a wasteful number, since it uses less digits than its factorization.

20012012211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215182961.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20012012211 its reverse (11221021002), we get a palindrome (31233033213).

The spelling of 20012012211 in words is "twenty billion, twelve million, twelve thousand, two hundred eleven".