30121120302 has 128 divisors (see below), whose sum is σ = 81038942208. Its totient is φ = 7235481600.

The previous prime is 30121120297. The next prime is 30121120307. The reversal of 30121120302 is 20302112103.

It is an interprime number because it is at equal distance from previous prime (30121120297) and next prime (30121120307).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30121120307) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 235402 + ... + 340082.

It is an arithmetic number, because the mean of its divisors is an integer number (633116736).

Almost surely, 2^30121120302 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30121120302, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40519471104).

30121120302 is an abundant number, since it is smaller than the sum of its proper divisors (50917821906).

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

30121120302 is a wasteful number, since it uses less digits than its factorization.

30121120302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104754.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 30121120302 its reverse (20302112103), we get a palindrome (50423232405).

The spelling of 30121120302 in words is "thirty billion, one hundred twenty-one million, one hundred twenty thousand, three hundred two".