30221133121221 has 16 divisors (see below), whose sum is σ = 48760147557504. Its totient is φ = 16253382518784.

The previous prime is 30221133121199. The next prime is 30221133121247. The reversal of 30221133121221 is 12212133112203.

It is not a de Polignac number, because 30221133121221 - 2¹⁹ = 30221132596933 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30221133121191 and 30221133121200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30221133101221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42326516620 + ... + 42326517333.

It is an arithmetic number, because the mean of its divisors is an integer number (3047509222344).

Almost surely, 2^{30221133121221} is an apocalyptic number.

It is an amenable number.

30221133121221 is a deficient number, since it is larger than the sum of its proper divisors (18539014436283).

30221133121221 is a wasteful number, since it uses less digits than its factorization.

30221133121221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84653033980.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 30221133121221 its reverse (12212133112203), we get a palindrome (42433266233424).

The spelling of 30221133121221 in words is "thirty trillion, two hundred twenty-one billion, one hundred thirty-three million, one hundred twenty-one thousand, two hundred twenty-one".