1212112020222 has 64 divisors (see below), whose sum is σ = 2721430763520. Its totient is φ = 399879828000.

The previous prime is 1212112020221. The next prime is 1212112020289. The reversal of 1212112020222 is 2220202112121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1212112020195 and 1212112020204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212112020221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1935468 + ... + 2484000.

It is an arithmetic number, because the mean of its divisors is an integer number (42522355680).

Almost surely, 2^{1212112020222} is an apocalyptic number.

1212112020222 is an abundant number, since it is smaller than the sum of its proper divisors (1509318743298).

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

1212112020222 is a wasteful number, since it uses less digits than its factorization.

1212112020222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548966 (or 548960 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 1212112020222 its reverse (2220202112121), we get a palindrome (3432314132343).

The spelling of 1212112020222 in words is "one trillion, two hundred twelve billion, one hundred twelve million, twenty thousand, two hundred twenty-two".