30121220231303 has 4 divisors (see below), whose sum is σ = 30123192950760. Its totient is φ = 30119247511848.

The previous prime is 30121220231287. The next prime is 30121220231327. The reversal of 30121220231303 is 30313202212103.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 30121220231303 - 2⁴ = 30121220231287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30121220231393) 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, 986336825 + ... + 986367362.

It is an arithmetic number, because the mean of its divisors is an integer number (7530798237690).

Almost surely, 2^{30121220231303} is an apocalyptic number.

30121220231303 is a deficient number, since it is larger than the sum of its proper divisors (1972719457).

30121220231303 is a wasteful number, since it uses less digits than its factorization.

30121220231303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1972719456.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 30121220231303 its reverse (30313202212103), we get a palindrome (60434422443406).

The spelling of 30121220231303 in words is "thirty trillion, one hundred twenty-one billion, two hundred twenty million, two hundred thirty-one thousand, three hundred three".