30121323221320 has 16 divisors (see below), whose sum is σ = 67772977248060. Its totient is φ = 12048529288512.

The previous prime is 30121323221317. The next prime is 30121323221321. The reversal of 30121323221320 is 2312232312103.

It can be written as a sum of positive squares in 2 ways, for example, as 29754908497636 + 366414723684 = 5454806^2 + 605322^2 .

It is a super-2 number, since 2×30121323221320² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30121323221321) 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, 376516540227 + ... + 376516540306.

Almost surely, 2^{30121323221320} is an apocalyptic number.

It is an amenable number.

30121323221320 is an abundant number, since it is smaller than the sum of its proper divisors (37651654026740).

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

30121323221320 is a wasteful number, since it uses less digits than its factorization.

30121323221320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 753033080544 (or 753033080540 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 30121323221320 its reverse (2312232312103), we get a palindrome (32433555533423).

The spelling of 30121323221320 in words is "thirty trillion, one hundred twenty-one billion, three hundred twenty-three million, two hundred twenty-one thousand, three hundred twenty".