30221023120121 has 4 divisors (see below), whose sum is σ = 30958121245044. Its totient is φ = 29483924995200.

The previous prime is 30221023120031. The next prime is 30221023120157. The reversal of 30221023120121 is 12102132012203.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6063906250000 + 24157116870121 = 2462500^2 + 4914989^2 .

It is a cyclic number.

It is not a de Polignac number, because 30221023120121 - 2¹⁴ = 30221023103737 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30221023120093 and 30221023120102.

It is not an unprimeable number, because it can be changed into a prime (30221023125121) 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, 368549062400 + ... + 368549062481.

It is an arithmetic number, because the mean of its divisors is an integer number (7739530311261).

Almost surely, 2^{30221023120121} is an apocalyptic number.

It is an amenable number.

30221023120121 is a deficient number, since it is larger than the sum of its proper divisors (737098124923).

30221023120121 is an equidigital number, since it uses as much as digits as its factorization.

30221023120121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 737098124922.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 30221023120121 its reverse (12102132012203), we get a palindrome (42323155132324).

The spelling of 30221023120121 in words is "thirty trillion, two hundred twenty-one billion, twenty-three million, one hundred twenty thousand, one hundred twenty-one".