100015045212 has 96 divisors (see below), whose sum is σ = 252096768000. Its totient is φ = 30759244992.

The previous prime is 100015045187. The next prime is 100015045213. The reversal of 100015045212 is 212540510001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100015045213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3387289 + ... + 3416687.

It is an arithmetic number, because the mean of its divisors is an integer number (2626008000).

Almost surely, 2^100015045212 is an apocalyptic number.

100015045212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 100015045212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126048384000).

100015045212 is an abundant number, since it is smaller than the sum of its proper divisors (152081722788).

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

100015045212 is a wasteful number, since it uses less digits than its factorization.

100015045212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29815 (or 29813 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 21.

Adding to 100015045212 its reverse (212540510001), we get a palindrome (312555555213).

The spelling of 100015045212 in words is "one hundred billion, fifteen million, forty-five thousand, two hundred twelve".