1001201212112 has 20 divisors (see below), whose sum is σ = 2006717947620. Its totient is φ = 483338515968.

The previous prime is 1001201212013. The next prime is 1001201212139. The reversal of 1001201212112 is 2112121021001.

It can be written as a sum of positive squares in 2 ways, for example, as 842386209856 + 158815002256 = 917816^2 + 398516^2 .

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 1078880153 + ... + 1078881080.

It is an arithmetic number, because the mean of its divisors is an integer number (100335897381).

Almost surely, 2^{1001201212112} is an apocalyptic number.

It is an amenable number.

1001201212112 is an abundant number, since it is smaller than the sum of its proper divisors (1005516735508).

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

1001201212112 is a wasteful number, since it uses less digits than its factorization.

1001201212112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2157761270 (or 2157761264 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1001201212112 its reverse (2112121021001), we get a palindrome (3113322233113).

The spelling of 1001201212112 in words is "one trillion, one billion, two hundred one million, two hundred twelve thousand, one hundred twelve".