1000021010103 has 32 divisors (see below), whose sum is σ = 1535184446400. Its totient is φ = 642605902848.

The previous prime is 1000021010017. The next prime is 1000021010147. The reversal of 1000021010103 is 3010101200001.

It is not a de Polignac number, because 1000021010103 - 2⁸ = 1000021009847 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 (1000021014103) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 612550 + ... + 1541187.

It is an arithmetic number, because the mean of its divisors is an integer number (47974513950).

Almost surely, 2^{1000021010103} is an apocalyptic number.

1000021010103 is a deficient number, since it is larger than the sum of its proper divisors (535163436297).

1000021010103 is a wasteful number, since it uses less digits than its factorization.

1000021010103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2154368 (or 2154362 counting only the distinct ones).

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

Adding to 1000021010103 its reverse (3010101200001), we get a palindrome (4010122210104).

The spelling of 1000021010103 in words is "one trillion, twenty-one million, ten thousand, one hundred three".