10001021201012 has 6 divisors (see below), whose sum is σ = 17501787101778. Its totient is φ = 5000510600504.

The previous prime is 10001021201009. The next prime is 10001021201021. The reversal of 10001021201012 is 21010212010001.

It can be written as a sum of positive squares in only one way, i.e., 8889485362576 + 1111535838436 = 2981524^2 + 1054294^2 .

It is a junction number, because it is equal to n+sod(n) for n = 10001021200984 and 10001021201002.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 1250127650123 + ... + 1250127650130.

It is an arithmetic number, because the mean of its divisors is an integer number (2916964516963).

Almost surely, 2^{10001021201012} is an apocalyptic number.

It is an amenable number.

10001021201012 is a deficient number, since it is larger than the sum of its proper divisors (7500765900766).

10001021201012 is a wasteful number, since it uses less digits than its factorization.

10001021201012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2500255300257 (or 2500255300255 counting only the distinct ones).

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

Adding to 10001021201012 its reverse (21010212010001), we get a palindrome (31011233211013).

The spelling of 10001021201012 in words is "ten trillion, one billion, twenty-one million, two hundred one thousand, twelve".