1212222201112 has 16 divisors (see below), whose sum is σ = 2447756367840. Its totient is φ = 559487169696.

The previous prime is 1212222201089. The next prime is 1212222201119. The reversal of 1212222201112 is 2111022222121.

It is a self number, because there is not a number n which added to its sum of digits gives 1212222201112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212222201119) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 5827991248 + ... + 5827991455.

It is an arithmetic number, because the mean of its divisors is an integer number (152984772990).

Almost surely, 2^{1212222201112} is an apocalyptic number.

It is an amenable number.

1212222201112 is an abundant number, since it is smaller than the sum of its proper divisors (1235534166728).

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

1212222201112 is a wasteful number, since it uses less digits than its factorization.

1212222201112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11655982722 (or 11655982718 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 1212222201112 its reverse (2111022222121), we get a palindrome (3323244423233).

The spelling of 1212222201112 in words is "one trillion, two hundred twelve billion, two hundred twenty-two million, two hundred one thousand, one hundred twelve".