1212020022112 has 24 divisors (see below), whose sum is σ = 2431186392096. Its totient is φ = 594575859072.

The previous prime is 1212020022053. The next prime is 1212020022119. The reversal of 1212020022112 is 2112200202121.

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 not an unprimeable number, because it can be changed into a prime (1212020022119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 357315528 + ... + 357318919.

It is an arithmetic number, because the mean of its divisors is an integer number (101299433004).

Almost surely, 2^{1212020022112} is an apocalyptic number.

It is an amenable number.

1212020022112 is an abundant number, since it is smaller than the sum of its proper divisors (1219166369984).

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

1212020022112 is an equidigital number, since it uses as much as digits as its factorization.

1212020022112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 714634510 (or 714634502 counting only the distinct ones).

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

Adding to 1212020022112 its reverse (2112200202121), we get a palindrome (3324220224233).

The spelling of 1212020022112 in words is "one trillion, two hundred twelve billion, twenty million, twenty-two thousand, one hundred twelve".