1021020000003 has 96 divisors (see below), whose sum is σ = 1619519616000. Its totient is φ = 617381533440.

The previous prime is 1021020000001. The next prime is 1021020000029. The reversal of 1021020000003 is 3000000201201.

It is a happy number.

It is not a de Polignac number, because 1021020000003 - 2¹ = 1021020000001 is a prime.

It is a super-2 number, since 2×1021020000003² (a number of 25 digits) contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1021020000003.

It is not an unprimeable number, because it can be changed into a prime (1021020000001) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 376619818 + ... + 376622528.

It is an arithmetic number, because the mean of its divisors is an integer number (16869996000).

Almost surely, 2^{1021020000003} is an apocalyptic number.

1021020000003 is a deficient number, since it is larger than the sum of its proper divisors (598499615997).

1021020000003 is a wasteful number, since it uses less digits than its factorization.

1021020000003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3377 (or 3374 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

Adding to 1021020000003 its reverse (3000000201201), we get a palindrome (4021020201204).

The spelling of 1021020000003 in words is "one trillion, twenty-one billion, twenty million, three", and thus it is an aban number and an uban number.