30003120123221 has 32 divisors (see below), whose sum is σ = 36366946172928. Its totient is φ = 24163773500160.

The previous prime is 30003120123217. The next prime is 30003120123239. The reversal of 30003120123221 is 12232102130003.

It is not a de Polignac number, because 30003120123221 - 2² = 30003120123217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30003120123193 and 30003120123202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30003120123271) 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, 898522436 + ... + 898555826.

It is an arithmetic number, because the mean of its divisors is an integer number (1136467067904).

Almost surely, 2^{30003120123221} is an apocalyptic number.

It is an amenable number.

30003120123221 is a deficient number, since it is larger than the sum of its proper divisors (6363826049707).

30003120123221 is a wasteful number, since it uses less digits than its factorization.

30003120123221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45801.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 30003120123221 its reverse (12232102130003), we get a palindrome (42235222253224).

The spelling of 30003120123221 in words is "thirty trillion, three billion, one hundred twenty million, one hundred twenty-three thousand, two hundred twenty-one".