30121332102 has 24 divisors (see below), whose sum is σ = 65284284936. Its totient is φ = 10037151936.

The previous prime is 30121332091. The next prime is 30121332103. The reversal of 30121332102 is 20123312103.

30121332102 is a `hidden beast` number, since 301 + 21 + 332 + 10 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30121332103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 217603 + ... + 328014.

It is an arithmetic number, because the mean of its divisors is an integer number (2720178539).

Almost surely, 2^30121332102 is an apocalyptic number.

30121332102 is an abundant number, since it is smaller than the sum of its proper divisors (35162952834).

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

30121332102 is a wasteful number, since it uses less digits than its factorization.

30121332102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548692 (or 548689 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 30121332102 its reverse (20123312103), we get a palindrome (50244644205).

The spelling of 30121332102 in words is "thirty billion, one hundred twenty-one million, three hundred thirty-two thousand, one hundred two".