1212022212112 has 40 divisors (see below), whose sum is σ = 2399286292992. Its totient is φ = 592955587200.

The previous prime is 1212022212109. The next prime is 1212022212119. The reversal of 1212022212112 is 2112122202121.

It is a self number, because there is not a number n which added to its sum of digits gives 1212022212112.

It is not an unprimeable number, because it can be changed into a prime (1212022212119) 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, 3064438 + ... + 3437269.

Almost surely, 2^{1212022212112} is an apocalyptic number.

It is an amenable number.

1212022212112 is a deficient number, since it is larger than the sum of its proper divisors (1187264080880).

1212022212112 is a wasteful number, since it uses less digits than its factorization.

1212022212112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6501967 (or 6501961 counting only the distinct ones).

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

Adding to 1212022212112 its reverse (2112122202121), we get a palindrome (3324144414233).

Subtracting 1212022212112 from its reverse (2112122202121), we obtain a palindrome (900099990009).

The spelling of 1212022212112 in words is "one trillion, two hundred twelve billion, twenty-two million, two hundred twelve thousand, one hundred twelve".