30121023120 has 40 divisors (see below), whose sum is σ = 93375172416. Its totient is φ = 8032272768.

The previous prime is 30121023109. The next prime is 30121023131. The reversal of 30121023120 is 2132012103.

It is an interprime number because it is at equal distance from previous prime (30121023109) and next prime (30121023131).

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 30121023120.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62751892 + ... + 62752371.

Almost surely, 2^30121023120 is an apocalyptic number.

30121023120 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30121023120 is an abundant number, since it is smaller than the sum of its proper divisors (63254149296).

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

30121023120 is a wasteful number, since it uses less digits than its factorization.

30121023120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125504279 (or 125504273 counting only the distinct ones).

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

Adding to 30121023120 its reverse (2132012103), we get a palindrome (32253035223).

The spelling of 30121023120 in words is "thirty billion, one hundred twenty-one million, twenty-three thousand, one hundred twenty".