1212022002112 has 56 divisors (see below), whose sum is σ = 2446996286592. Its totient is φ = 595545849600.

The previous prime is 1212022002083. The next prime is 1212022002221. The reversal of 1212022002112 is 2112002202121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161787 + ... + 1565317.

Almost surely, 2^{1212022002112} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1212022002112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1223498143296).

1212022002112 is an abundant number, since it is smaller than the sum of its proper divisors (1234974284480).

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

1212022002112 is a wasteful number, since it uses less digits than its factorization.

1212022002112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1403777 (or 1403767 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1212022002112 its reverse (2112002202121), we get a palindrome (3324024204233).

The spelling of 1212022002112 in words is "one trillion, two hundred twelve billion, twenty-two million, two thousand, one hundred twelve".