1030303021021 has 4 divisors (see below), whose sum is σ = 1036058904000. Its totient is φ = 1024547138044.

The previous prime is 1030303020977. The next prime is 1030303021043. The reversal of 1030303021021 is 1201203030301.

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 a de Polignac number, because none of the positive numbers 2^k-1030303021021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1030303020986 and 1030303021004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1030303021081) 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, 2877941221 + ... + 2877941578.

It is an arithmetic number, because the mean of its divisors is an integer number (259014726000).

Almost surely, 2^{1030303021021} is an apocalyptic number.

It is an amenable number.

1030303021021 is a deficient number, since it is larger than the sum of its proper divisors (5755882979).

1030303021021 is an equidigital number, since it uses as much as digits as its factorization.

1030303021021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5755882978.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 1030303021021 its reverse (1201203030301), we get a palindrome (2231506051322).

The spelling of 1030303021021 in words is "one trillion, thirty billion, three hundred three million, twenty-one thousand, twenty-one".