1021202212112 has 30 divisors (see below), whose sum is σ = 2088195878718. Its totient is φ = 483727360896.

The previous prime is 1021202212111. The next prime is 1021202212123. The reversal of 1021202212112 is 2112122021201.

It can be written as a sum of positive squares in only one way, i.e., 856742764816 + 164459447296 = 925604^2 + 405536^2 .

It is not an unprimeable number, because it can be changed into a prime (1021202212111) 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 5 ways as a sum of consecutive naturals, for example, 88394693 + ... + 88406244.

Almost surely, 2^{1021202212112} is an apocalyptic number.

It is an amenable number.

1021202212112 is an abundant number, since it is smaller than the sum of its proper divisors (1066993666606).

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

1021202212112 is a wasteful number, since it uses less digits than its factorization.

1021202212112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176800983 (or 176800958 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1021202212112 its reverse (2112122021201), we get a palindrome (3133324233313).

The spelling of 1021202212112 in words is "one trillion, twenty-one billion, two hundred two million, two hundred twelve thousand, one hundred twelve".