30121244406 has 96 divisors (see below), whose sum is σ = 74365095168. Its totient is φ = 8722105920.

The previous prime is 30121244401. The next prime is 30121244437. The reversal of 30121244406 is 60444212103.

It is a happy number.

30121244406 is a `hidden beast` number, since 3 + 0 + 1 + 212 + 4 + 440 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 30121244406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30121244401) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5630625 + ... + 5635971.

It is an arithmetic number, because the mean of its divisors is an integer number (774636408).

Almost surely, 2^30121244406 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30121244406, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37182547584).

30121244406 is an abundant number, since it is smaller than the sum of its proper divisors (44243850762).

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

30121244406 is a wasteful number, since it uses less digits than its factorization.

30121244406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6626 (or 6623 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 30121244406 its reverse (60444212103), we get a palindrome (90565456509).

The spelling of 30121244406 in words is "thirty billion, one hundred twenty-one million, two hundred forty-four thousand, four hundred six".