30121322100 has 72 divisors (see below), whose sum is σ = 90940221120. Its totient is φ = 7683118080.

The previous prime is 30121322089. The next prime is 30121322107. The reversal of 30121322100 is 122312103.

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 30121322100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30121322107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2175805 + ... + 2189604.

Almost surely, 2^30121322100 is an apocalyptic number.

30121322100 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30121322100 is an abundant number, since it is smaller than the sum of its proper divisors (60818899020).

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

30121322100 is a wasteful number, since it uses less digits than its factorization.

30121322100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4365449 (or 4365442 counting only the distinct ones).

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

Adding to 30121322100 its reverse (122312103), we get a palindrome (30243634203).

The spelling of 30121322100 in words is "thirty billion, one hundred twenty-one million, three hundred twenty-two thousand, one hundred".