30221432123 has 4 divisors (see below), whose sum is σ = 30253144968. Its totient is φ = 30189719280.

The previous prime is 30221432119. The next prime is 30221432147. The reversal of 30221432123 is 32123412203.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32123412203 = 8171 ⋅3931393.

It is a cyclic number.

It is not a de Polignac number, because 30221432123 - 2² = 30221432119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30221432183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15854993 + ... + 15856898.

It is an arithmetic number, because the mean of its divisors is an integer number (7563286242).

Almost surely, 2^30221432123 is an apocalyptic number.

30221432123 is a deficient number, since it is larger than the sum of its proper divisors (31712845).

30221432123 is an equidigital number, since it uses as much as digits as its factorization.

30221432123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31712844.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 30221432123 its reverse (32123412203), we get a palindrome (62344844326).

The spelling of 30221432123 in words is "thirty billion, two hundred twenty-one million, four hundred thirty-two thousand, one hundred twenty-three".