30342121221 has 8 divisors (see below), whose sum is σ = 40483896160. Its totient is φ = 20214213552.

The previous prime is 30342121213. The next prime is 30342121253. The reversal of 30342121221 is 12212124303.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30342121221 - 2³ = 30342121213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30342121721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3461710 + ... + 3470463.

It is an arithmetic number, because the mean of its divisors is an integer number (5060487020).

Almost surely, 2^30342121221 is an apocalyptic number.

It is an amenable number.

30342121221 is a deficient number, since it is larger than the sum of its proper divisors (10141774939).

30342121221 is a wasteful number, since it uses less digits than its factorization.

30342121221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6933635.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 30342121221 its reverse (12212124303), we get a palindrome (42554245524).

The spelling of 30342121221 in words is "thirty billion, three hundred forty-two million, one hundred twenty-one thousand, two hundred twenty-one".