30123112103221 has 16 divisors (see below), whose sum is σ = 31864665784320. Its totient is φ = 28417577569920.

The previous prime is 30123112103207. The next prime is 30123112103237. The reversal of 30123112103221 is 12230121132103.

It is a cyclic number.

It is not a de Polignac number, because 30123112103221 - 2⁷ = 30123112103093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30123112103192 and 30123112103201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30123112103321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43496815 + ... + 44183923.

It is an arithmetic number, because the mean of its divisors is an integer number (1991541611520).

Almost surely, 2^{30123112103221} is an apocalyptic number.

It is an amenable number.

30123112103221 is a deficient number, since it is larger than the sum of its proper divisors (1741553681099).

30123112103221 is a wasteful number, since it uses less digits than its factorization.

30123112103221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 713316.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 30123112103221 its reverse (12230121132103), we get a palindrome (42353233235324).

The spelling of 30123112103221 in words is "thirty trillion, one hundred twenty-three billion, one hundred twelve million, one hundred three thousand, two hundred twenty-one".