100001021000103 has 24 divisors (see below), whose sum is σ = 145805209149600. Its totient is φ = 66042381856320.

The previous prime is 100001021000053. The next prime is 100001021000143. The reversal of 100001021000103 is 301000120100001.

It is not a de Polignac number, because 100001021000103 - 2²⁰ = 100001019951527 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100001021000143) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 99462243 + ... + 100462628.

It is an arithmetic number, because the mean of its divisors is an integer number (6075217047900).

Almost surely, 2^{100001021000103} is an apocalyptic number.

100001021000103 is a deficient number, since it is larger than the sum of its proper divisors (45804188149497).

100001021000103 is a wasteful number, since it uses less digits than its factorization.

100001021000103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199925399 (or 199925396 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

Adding to 100001021000103 its reverse (301000120100001), we get a palindrome (401001141100104).

The spelling of 100001021000103 in words is "one hundred trillion, one billion, twenty-one million, one hundred three", and thus it is an aban number.