30221132230021 has 4 divisors (see below), whose sum is σ = 30221483614272. Its totient is φ = 30220780845772.

The previous prime is 30221132229983. The next prime is 30221132230027. The reversal of 30221132230021 is 12003223112203.

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 30221132230021 - 2¹⁵ = 30221132197253 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30221132229974 and 30221132230001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30221132230027) 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, 175563085 + ... + 175735138.

It is an arithmetic number, because the mean of its divisors is an integer number (7555370903568).

Almost surely, 2^{30221132230021} is an apocalyptic number.

It is an amenable number.

30221132230021 is a deficient number, since it is larger than the sum of its proper divisors (351384251).

30221132230021 is an equidigital number, since it uses as much as digits as its factorization.

30221132230021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351384250.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 30221132230021 its reverse (12003223112203), we get a palindrome (42224355342224).

The spelling of 30221132230021 in words is "thirty trillion, two hundred twenty-one billion, one hundred thirty-two million, two hundred thirty thousand, twenty-one".