1212222022112 has 24 divisors (see below), whose sum is σ = 2427012315000. Its totient is φ = 595837942144.

The previous prime is 1212222022079. The next prime is 1212222022129. The reversal of 1212222022112 is 2112202222121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 321031487 + ... + 321035262.

It is an arithmetic number, because the mean of its divisors is an integer number (101125513125).

Almost surely, 2^{1212222022112} is an apocalyptic number.

It is an amenable number.

1212222022112 is an abundant number, since it is smaller than the sum of its proper divisors (1214790292888).

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

1212222022112 is an equidigital number, since it uses as much as digits as its factorization.

1212222022112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642066818 (or 642066810 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 1212222022112 its reverse (2112202222121), we get a palindrome (3324424244233).

The spelling of 1212222022112 in words is "one trillion, two hundred twelve billion, two hundred twenty-two million, twenty-two thousand, one hundred twelve".