30121241024 has 56 divisors (see below), whose sum is σ = 68433878880. Its totient is φ = 12885820416.

The previous prime is 30121241023. The next prime is 30121241041. The reversal of 30121241024 is 42014212103.

It is a tau number, because it is divible by the number of its divisors (56).

It is a junction number, because it is equal to n+sod(n) for n = 30121240987 and 30121241005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30121241023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189182 + ... + 309890.

Almost surely, 2^30121241024 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30121241024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34216939440).

30121241024 is an abundant number, since it is smaller than the sum of its proper divisors (38312637856).

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

30121241024 is a wasteful number, since it uses less digits than its factorization.

30121241024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121285 (or 121275 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 30121241024 its reverse (42014212103), we get a palindrome (72135453127).

The spelling of 30121241024 in words is "thirty billion, one hundred twenty-one million, two hundred forty-one thousand, twenty-four".