20111200212 has 24 divisors (see below), whose sum is σ = 47127540096. Its totient is φ = 6674961088.

The previous prime is 20111200201. The next prime is 20111200273. The reversal of 20111200212 is 21200211102.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3593628 + ... + 3599219.

It is an arithmetic number, because the mean of its divisors is an integer number (1963647504).

Almost surely, 2^20111200212 is an apocalyptic number.

It is an amenable number.

20111200212 is an abundant number, since it is smaller than the sum of its proper divisors (27016339884).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20111200212 is a wasteful number, since it uses less digits than its factorization.

20111200212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7193087 (or 7193085 counting only the distinct ones).

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

Adding to 20111200212 its reverse (21200211102), we get a palindrome (41311411314).

The spelling of 20111200212 in words is "twenty billion, one hundred eleven million, two hundred thousand, two hundred twelve".