102001001012 has 12 divisors (see below), whose sum is σ = 178513607076. Its totient is φ = 50997113280.

The previous prime is 102001000999. The next prime is 102001001057. The reversal of 102001001012 is 210100100201.

It can be written as a sum of positive squares in 2 ways, for example, as 99233820196 + 2767180816 = 315014^2 + 52604^2 .

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 in 3 ways as a sum of consecutive naturals, for example, 778439 + ... + 899982.

It is an arithmetic number, because the mean of its divisors is an integer number (14876133923).

Almost surely, 2^102001001012 is an apocalyptic number.

It is an amenable number.

102001001012 is a deficient number, since it is larger than the sum of its proper divisors (76512606064).

102001001012 is a wasteful number, since it uses less digits than its factorization.

102001001012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1693618 (or 1693616 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 102001001012 its reverse (210100100201), we get a palindrome (312101101213).

The spelling of 102001001012 in words is "one hundred two billion, one million, one thousand, twelve".