30021122231 has 4 divisors (see below), whose sum is σ = 30073884000. Its totient is φ = 29968360464.

The previous prime is 30021122227. The next prime is 30021122267. The reversal of 30021122231 is 13222112003.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 30021122231 - 2² = 30021122227 is a prime.

It is a super-2 number, since 2×30021122231² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30021122221) 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, 26380031 + ... + 26381168.

It is an arithmetic number, because the mean of its divisors is an integer number (7518471000).

Almost surely, 2^30021122231 is an apocalyptic number.

30021122231 is a deficient number, since it is larger than the sum of its proper divisors (52761769).

30021122231 is an equidigital number, since it uses as much as digits as its factorization.

30021122231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52761768.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 30021122231 its reverse (13222112003), we get a palindrome (43243234234).

The spelling of 30021122231 in words is "thirty billion, twenty-one million, one hundred twenty-two thousand, two hundred thirty-one".