1202221122112 has 56 divisors (see below), whose sum is σ = 2526696972504. Its totient is φ = 565592850432.

The previous prime is 1202221122101. The next prime is 1202221122161. The reversal of 1202221122112 is 2112211222021.

It can be written as a sum of positive squares in 4 ways, for example, as 236608307776 + 965612814336 = 486424^2 + 982656^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1202221122112.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3782548 + ... + 4088044.

Almost surely, 2^{1202221122112} is an apocalyptic number.

It is an amenable number.

1202221122112 is an abundant number, since it is smaller than the sum of its proper divisors (1324475850392).

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

1202221122112 is a wasteful number, since it uses less digits than its factorization.

1202221122112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309143 (or 309133 counting only the distinct ones).

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

Adding to 1202221122112 its reverse (2112211222021), we get a palindrome (3314432344133).

Subtracting 1202221122112 from its reverse (2112211222021), we obtain a palindrome (909990099909).

The spelling of 1202221122112 in words is "one trillion, two hundred two billion, two hundred twenty-one million, one hundred twenty-two thousand, one hundred twelve".