20121112211 has 8 divisors (see below), whose sum is σ = 20262950064. Its totient is φ = 19979568160.

The previous prime is 20121112199. The next prime is 20121112213. The reversal of 20121112211 is 11221112102.

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 20121112211 - 2¹⁰ = 20121111187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20121112213) 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, 64916 + ... + 210846.

It is an arithmetic number, because the mean of its divisors is an integer number (2532868758).

Almost surely, 2^20121112211 is an apocalyptic number.

20121112211 is a deficient number, since it is larger than the sum of its proper divisors (141837853).

20121112211 is a wasteful number, since it uses less digits than its factorization.

20121112211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146901.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 20121112211 its reverse (11221112102), we get a palindrome (31342224313).

The spelling of 20121112211 in words is "twenty billion, one hundred twenty-one million, one hundred twelve thousand, two hundred eleven".