30221023033 has 4 divisors (see below), whose sum is σ = 30441614580. Its totient is φ = 30000431488.

The previous prime is 30221023003. The next prime is 30221023039. The reversal of 30221023033 is 33032012203.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 33032012203 = 1747 ⋅18907849.

It can be written as a sum of positive squares in 2 ways, for example, as 15948658944 + 14272364089 = 126288^2 + 119467^2 .

It is a cyclic number.

It is not a de Polignac number, because 30221023033 - 2²⁵ = 30187468601 is a prime.

It is a super-2 number, since 2×30221023033² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30221023033.

It is not an unprimeable number, because it can be changed into a prime (30221023039) 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, 110295568 + ... + 110295841.

It is an arithmetic number, because the mean of its divisors is an integer number (7610403645).

Almost surely, 2^30221023033 is an apocalyptic number.

It is an amenable number.

30221023033 is a deficient number, since it is larger than the sum of its proper divisors (220591547).

30221023033 is a wasteful number, since it uses less digits than its factorization.

30221023033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220591546.

The product of its (nonzero) digits is 648, while the sum is 19.

Adding to 30221023033 its reverse (33032012203), we get a palindrome (63253035236).

The spelling of 30221023033 in words is "thirty billion, two hundred twenty-one million, twenty-three thousand, thirty-three".