1200220022112 has 96 divisors (see below), whose sum is σ = 3406029984000. Its totient is φ = 368773129728.

The previous prime is 1200220022081. The next prime is 1200220022119. The reversal of 1200220022112 is 2112200220021.

It is a tau number, because it is divible by the number of its divisors (96).

It is a junction number, because it is equal to n+sod(n) for n = 1200220022091 and 1200220022100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200220022119) 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 15 ways as a sum of consecutive naturals, for example, 8824612 + ... + 8959587.

It is an arithmetic number, because the mean of its divisors is an integer number (35479479000).

Almost surely, 2^{1200220022112} is an apocalyptic number.

1200220022112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1200220022112 is an abundant number, since it is smaller than the sum of its proper divisors (2205809961888).

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

1200220022112 is a wasteful number, since it uses less digits than its factorization.

1200220022112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17784268 (or 17784260 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 1200220022112 its reverse (2112200220021), we get a palindrome (3312420242133).

The spelling of 1200220022112 in words is "one trillion, two hundred billion, two hundred twenty million, twenty-two thousand, one hundred twelve".