11212220001212 has 12 divisors (see below), whose sum is σ = 19622477815080. Its totient is φ = 5605797768336.

The previous prime is 11212220001209. The next prime is 11212220001253. The reversal of 11212220001212 is 21210002221211.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77977262 + ... + 78120917.

It is an arithmetic number, because the mean of its divisors is an integer number (1635206484590).

Almost surely, 2^{11212220001212} is an apocalyptic number.

It is an amenable number.

11212220001212 is a deficient number, since it is larger than the sum of its proper divisors (8410257813868).

11212220001212 is a wasteful number, since it uses less digits than its factorization.

11212220001212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156116140 (or 156116138 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 11212220001212 its reverse (21210002221211), we get a palindrome (32422222222423).

The spelling of 11212220001212 in words is "eleven trillion, two hundred twelve billion, two hundred twenty million, one thousand, two hundred twelve".