30121221294 has 96 divisors (see below), whose sum is σ = 68821945920. Its totient is φ = 9508492800.

The previous prime is 30121221283. The next prime is 30121221301. The reversal of 30121221294 is 49212212103.

30121221294 is a `hidden beast` number, since 30 + 121 + 221 + 294 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14771527 + ... + 14773565.

It is an arithmetic number, because the mean of its divisors is an integer number (716895270).

Almost surely, 2^30121221294 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30121221294, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34410972960).

30121221294 is an abundant number, since it is smaller than the sum of its proper divisors (38700724626).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30121221294 is a wasteful number, since it uses less digits than its factorization.

30121221294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2666 (or 2663 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

Adding to 30121221294 its reverse (49212212103), we get a palindrome (79333433397).

The spelling of 30121221294 in words is "thirty billion, one hundred twenty-one million, two hundred twenty-one thousand, two hundred ninety-four".