30221660533 has 4 divisors (see below), whose sum is σ = 30223201600. Its totient is φ = 30220119468.

The previous prime is 30221660501. The next prime is 30221660549. The reversal of 30221660533 is 33506612203.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 33506612203 = 172321 ⋅194443.

It is a cyclic number.

It is not a de Polignac number, because 30221660533 - 2⁵ = 30221660501 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30221660495 and 30221660504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30221660033) 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, 740733 + ... + 780466.

It is an arithmetic number, because the mean of its divisors is an integer number (7555800400).

Almost surely, 2^30221660533 is an apocalyptic number.

It is an amenable number.

30221660533 is a deficient number, since it is larger than the sum of its proper divisors (1541067).

30221660533 is a wasteful number, since it uses less digits than its factorization.

30221660533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1541066.

The product of its (nonzero) digits is 19440, while the sum is 31.

The spelling of 30221660533 in words is "thirty billion, two hundred twenty-one million, six hundred sixty thousand, five hundred thirty-three".