30103211020021 has 4 divisors (see below), whose sum is σ = 30123843791200. Its totient is φ = 30082578248844.

The previous prime is 30103211020007. The next prime is 30103211020039. The reversal of 30103211020021 is 12002011230103.

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 30103211020021 - 2¹⁹ = 30103210495733 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30103211019977 and 30103211020004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30103211020921) 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, 10316383401 + ... + 10316386318.

It is an arithmetic number, because the mean of its divisors is an integer number (7530960947800).

Almost surely, 2^{30103211020021} is an apocalyptic number.

It is an amenable number.

30103211020021 is a deficient number, since it is larger than the sum of its proper divisors (20632771179).

30103211020021 is a wasteful number, since it uses less digits than its factorization.

30103211020021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20632771178.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 30103211020021 its reverse (12002011230103), we get a palindrome (42105222250124).

The spelling of 30103211020021 in words is "thirty trillion, one hundred three billion, two hundred eleven million, twenty thousand, twenty-one".