1001022021112 has 64 divisors (see below), whose sum is σ = 1947006720000. Its totient is φ = 481917152640.

The previous prime is 1001022021079. The next prime is 1001022021169. The reversal of 1001022021112 is 2111202201001.

It is a junction number, because it is equal to n+sod(n) for n = 1001022021092 and 1001022021101.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 281263189 + ... + 281266747.

It is an arithmetic number, because the mean of its divisors is an integer number (30421980000).

Almost surely, 2^{1001022021112} is an apocalyptic number.

It is an amenable number.

1001022021112 is a deficient number, since it is larger than the sum of its proper divisors (945984698888).

1001022021112 is a wasteful number, since it uses less digits than its factorization.

1001022021112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6604 (or 6600 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1001022021112 its reverse (2111202201001), we get a palindrome (3112224222113).

The spelling of 1001022021112 in words is "one trillion, one billion, twenty-two million, twenty-one thousand, one hundred twelve".