1021002100012 has 48 divisors (see below), whose sum is σ = 1851724385280. Its totient is φ = 492259565952.

The previous prime is 1021002099979. The next prime is 1021002100081. The reversal of 1021002100012 is 2100012001201.

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, 9852733 + ... + 9955819.

It is an arithmetic number, because the mean of its divisors is an integer number (38577591360).

Almost surely, 2^{1021002100012} is an apocalyptic number.

It is an amenable number.

1021002100012 is a deficient number, since it is larger than the sum of its proper divisors (830722285268).

1021002100012 is a wasteful number, since it uses less digits than its factorization.

1021002100012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103870 (or 103868 counting only the distinct ones).

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

Adding to 1021002100012 its reverse (2100012001201), we get a palindrome (3121014101213).

The spelling of 1021002100012 in words is "one trillion, twenty-one billion, two million, one hundred thousand, twelve".