1020021001012 has 48 divisors (see below), whose sum is σ = 1951905174912. Its totient is φ = 463557144960.

The previous prime is 1020021001009. The next prime is 1020021001049. The reversal of 1020021001012 is 2101001200201.

It is a self number, because there is not a number n which added to its sum of digits gives 1020021001012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2730078 + ... + 3081130.

It is an arithmetic number, because the mean of its divisors is an integer number (40664691144).

Almost surely, 2^{1020021001012} is an apocalyptic number.

It is an amenable number.

1020021001012 is a deficient number, since it is larger than the sum of its proper divisors (931884173900).

1020021001012 is a wasteful number, since it uses less digits than its factorization.

1020021001012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351928 (or 351926 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 1020021001012 its reverse (2101001200201), we get a palindrome (3121022201213).

The spelling of 1020021001012 in words is "one trillion, twenty billion, twenty-one million, one thousand, twelve".