30121223012320 has 144 divisors (see below), whose sum is σ = 81152602583472. Its totient is φ = 10476946810880.

The previous prime is 30121223012233. The next prime is 30121223012327. The reversal of 30121223012320 is 2321032212103.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 30121223012291 and 30121223012300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30121223012327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15245077 + ... + 17107156.

It is an arithmetic number, because the mean of its divisors is an integer number (563559740163).

Almost surely, 2^{30121223012320} is an apocalyptic number.

It is an amenable number.

30121223012320 is an abundant number, since it is smaller than the sum of its proper divisors (51031379571152).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30121223012320 is a wasteful number, since it uses less digits than its factorization.

30121223012320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32352305 (or 32352274 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 30121223012320 its reverse (2321032212103), we get a palindrome (32442255224423).

The spelling of 30121223012320 in words is "thirty trillion, one hundred twenty-one billion, two hundred twenty-three million, twelve thousand, three hundred twenty".