1021000102012 has 36 divisors (see below), whose sum is σ = 1965537366520. Its totient is φ = 463715508960.

The previous prime is 1021000102007. The next prime is 1021000102019. The reversal of 1021000102012 is 2102010001201.

It is a self number, because there is not a number n which added to its sum of digits gives 1021000102012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021000102019) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 253962 + ... + 1451377.

Almost surely, 2^{1021000102012} is an apocalyptic number.

It is an amenable number.

1021000102012 is a deficient number, since it is larger than the sum of its proper divisors (944537264508).

1021000102012 is a wasteful number, since it uses less digits than its factorization.

1021000102012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1706602 (or 1706589 counting only the distinct ones).

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

Adding to 1021000102012 its reverse (2102010001201), we get a palindrome (3123010103213).

The spelling of 1021000102012 in words is "one trillion, twenty-one billion, one hundred two thousand, twelve".