1000310030021 has 4 divisors (see below), whose sum is σ = 1000822748544. Its totient is φ = 999797311500.

The previous prime is 1000310030017. The next prime is 1000310030087. The reversal of 1000310030021 is 1200300130001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1000310030021 - 2² = 1000310030017 is a prime.

It is a super-2 number, since 2×1000310030021² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1000310029984 and 1000310030011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000310036021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 256356335 + ... + 256360236.

It is an arithmetic number, because the mean of its divisors is an integer number (250205687136).

Almost surely, 2^{1000310030021} is an apocalyptic number.

It is an amenable number.

1000310030021 is a deficient number, since it is larger than the sum of its proper divisors (512718523).

1000310030021 is an equidigital number, since it uses as much as digits as its factorization.

1000310030021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512718522.

The product of its (nonzero) digits is 18, while the sum is 11.

Adding to 1000310030021 its reverse (1200300130001), we get a palindrome (2200610160022).

The spelling of 1000310030021 in words is "one trillion, three hundred ten million, thirty thousand, twenty-one".