30121332120 has 96 divisors (see below), whose sum is σ = 106793827920. Its totient is φ = 7302140160.

The previous prime is 30121332119. The next prime is 30121332121. The reversal of 30121332120 is 2123312103.

30121332120 is a `hidden beast` number, since 301 + 21 + 3 + 321 + 20 = 666.

It is an interprime number because it is at equal distance from previous prime (30121332119) and next prime (30121332121).

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

It is a junction number, because it is equal to n+sod(n) for n = 30121332093 and 30121332102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30121332121) 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 23 ways as a sum of consecutive naturals, for example, 3799239 + ... + 3807158.

Almost surely, 2^30121332120 is an apocalyptic number.

30121332120 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30121332120 is an abundant number, since it is smaller than the sum of its proper divisors (76672495800).

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

30121332120 is a wasteful number, since it uses less digits than its factorization.

30121332120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7606425 (or 7606418 counting only the distinct ones).

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

Adding to 30121332120 its reverse (2123312103), we get a palindrome (32244644223).

It can be divided in two parts, 301213 and 32120, that added together give a palindrome (333333).

The spelling of 30121332120 in words is "thirty billion, one hundred twenty-one million, three hundred thirty-two thousand, one hundred twenty".