1002000300021 has 32 divisors (see below), whose sum is σ = 1697415782400. Its totient is φ = 572265373680.

The previous prime is 1002000300019. The next prime is 1002000300029. The reversal of 1002000300021 is 1200030002001.

It is a happy number.

It is not a de Polignac number, because 1002000300021 - 2¹ = 1002000300019 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 = 1002000299976 and 1002000300012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002000300029) 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, 1063161 + ... + 1770398.

It is an arithmetic number, because the mean of its divisors is an integer number (53044243200).

Almost surely, 2^{1002000300021} is an apocalyptic number.

It is an amenable number.

1002000300021 is a deficient number, since it is larger than the sum of its proper divisors (695415482379).

1002000300021 is a wasteful number, since it uses less digits than its factorization.

1002000300021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2835446 (or 2835440 counting only the distinct ones).

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

Adding to 1002000300021 its reverse (1200030002001), we get a palindrome (2202030302022).

The spelling of 1002000300021 in words is "one trillion, two billion, three hundred thousand, twenty-one".