30220120321 has 4 divisors (see below), whose sum is σ = 31194962944. Its totient is φ = 29245277700.

The previous prime is 30220120283. The next prime is 30220120327. The reversal of 30220120321 is 12302102203.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 30220120321 - 2¹¹ = 30220118273 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30220120295 and 30220120304.

It is not an unprimeable number, because it can be changed into a prime (30220120327) 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, 487421265 + ... + 487421326.

It is an arithmetic number, because the mean of its divisors is an integer number (7798740736).

Almost surely, 2^30220120321 is an apocalyptic number.

30220120321 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

30220120321 is a deficient number, since it is larger than the sum of its proper divisors (974842623).

30220120321 is an equidigital number, since it uses as much as digits as its factorization.

30220120321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 974842622.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 30220120321 its reverse (12302102203), we get a palindrome (42522222524).

The spelling of 30220120321 in words is "thirty billion, two hundred twenty million, one hundred twenty thousand, three hundred twenty-one".