1021001021012 has 12 divisors (see below), whose sum is σ = 2042002042080. Its totient is φ = 437571866136.

The previous prime is 1021001020981. The next prime is 1021001021057. The reversal of 1021001021012 is 2101201001201.

1021001021012 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 1021001020984 and 1021001021002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18232161062 + ... + 18232161117.

It is an arithmetic number, because the mean of its divisors is an integer number (170166836840).

Almost surely, 2^{1021001021012} is an apocalyptic number.

It is an amenable number.

1021001021012 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1021001021012 is a wasteful number, since it uses less digits than its factorization.

1021001021012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36464322190 (or 36464322188 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1021001021012 its reverse (2101201001201), we get a palindrome (3122202022213).

The spelling of 1021001021012 in words is "one trillion, twenty-one billion, one million, twenty-one thousand, twelve".