10200001012 has 6 divisors (see below), whose sum is σ = 17850001778. Its totient is φ = 5100000504.

The previous prime is 10200001001. The next prime is 10200001039. The reversal of 10200001012 is 21010000201.

It can be written as a sum of positive squares in only one way, i.e., 9618901776 + 581099236 = 98076^2 + 24106^2 .

It is a junction number, because it is equal to n+sod(n) for n = 10200000986 and 10200001004.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1275000123 + ... + 1275000130.

Almost surely, 2^10200001012 is an apocalyptic number.

It is an amenable number.

10200001012 is a deficient number, since it is larger than the sum of its proper divisors (7650000766).

10200001012 is a wasteful number, since it uses less digits than its factorization.

10200001012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2550000257 (or 2550000255 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 10200001012 its reverse (21010000201), we get a palindrome (31210001213).

The spelling of 10200001012 in words is "ten billion, two hundred million, one thousand, twelve".