100001021012 has 12 divisors (see below), whose sum is σ = 175890122100. Its totient is φ = 49746700416.

The previous prime is 100001020969. The next prime is 100001021023. The reversal of 100001021012 is 210120100001.

It can be written as a sum of positive squares in 2 ways, for example, as 99404000656 + 597020356 = 315284^2 + 24434^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63451637 + ... + 63453212.

It is an arithmetic number, because the mean of its divisors is an integer number (14657510175).

Almost surely, 2^100001021012 is an apocalyptic number.

It is an amenable number.

100001021012 is a deficient number, since it is larger than the sum of its proper divisors (75889101088).

100001021012 is a wasteful number, since it uses less digits than its factorization.

100001021012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126905050 (or 126905048 counting only the distinct ones).

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

Adding to 100001021012 its reverse (210120100001), we get a palindrome (310121121013).

The spelling of 100001021012 in words is "one hundred billion, one million, twenty-one thousand, twelve".