100312121130 has 64 divisors (see below), whose sum is σ = 260096901120. Its totient is φ = 24613295616.

The previous prime is 100312121123. The next prime is 100312121149. The reversal of 100312121130 is 31121213001.

It is a happy number.

It is a super-3 number, since 3×100312121130³ (a number of 34 digits) contains 333 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 288810 + ... + 532949.

It is an arithmetic number, because the mean of its divisors is an integer number (4064014080).

Almost surely, 2^100312121130 is an apocalyptic number.

100312121130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100312121130 is an abundant number, since it is smaller than the sum of its proper divisors (159784779990).

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

100312121130 is a wasteful number, since it uses less digits than its factorization.

100312121130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 822095.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 100312121130 its reverse (31121213001), we get a palindrome (131433334131).

The spelling of 100312121130 in words is "one hundred billion, three hundred twelve million, one hundred twenty-one thousand, one hundred thirty".