10103001021 has 16 divisors (see below), whose sum is σ = 15076665600. Its totient is φ = 6686168544.

The previous prime is 10103001001. The next prime is 10103001127. The reversal of 10103001021 is 12010030101.

It is not a de Polignac number, because 10103001021 - 2⁵ = 10103000989 is a prime.

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

It is a junction number, because it is equal to n+sod(n) for n = 10103000994 and 10103001012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10103001001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1361941 + ... + 1369338.

It is an arithmetic number, because the mean of its divisors is an integer number (942291600).

Almost surely, 2^10103001021 is an apocalyptic number.

It is an amenable number.

10103001021 is a deficient number, since it is larger than the sum of its proper divisors (4973664579).

10103001021 is a wasteful number, since it uses less digits than its factorization.

10103001021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2731425 (or 2731419 counting only the distinct ones).

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

Adding to 10103001021 its reverse (12010030101), we get a palindrome (22113031122).

The spelling of 10103001021 in words is "ten billion, one hundred three million, one thousand, twenty-one".