1021020112012 has 24 divisors (see below), whose sum is σ = 1794765616560. Its totient is φ = 508230210240.

The previous prime is 1021020111973. The next prime is 1021020112043. The reversal of 1021020112012 is 2102110201201.

It is a junction number, because it is equal to n+sod(n) for n = 1021020111983 and 1021020112001.

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, 24986814 + ... + 25027642.

It is an arithmetic number, because the mean of its divisors is an integer number (74781900690).

Almost surely, 2^{1021020112012} is an apocalyptic number.

It is an amenable number.

1021020112012 is a deficient number, since it is larger than the sum of its proper divisors (773745504548).

1021020112012 is a wasteful number, since it uses less digits than its factorization.

1021020112012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68601 (or 68599 counting only the distinct ones).

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

Adding to 1021020112012 its reverse (2102110201201), we get a palindrome (3123130313213).

The spelling of 1021020112012 in words is "one trillion, twenty-one billion, twenty million, one hundred twelve thousand, twelve".