100111200001212 has 48 divisors (see below), whose sum is σ = 235910269274400. Its totient is φ = 33039346041600.

The previous prime is 100111200001193. The next prime is 100111200001231. The reversal of 100111200001212 is 212100002111001.

It is an interprime number because it is at equal distance from previous prime (100111200001193) and next prime (100111200001231).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62461714 + ... + 64044422.

It is an arithmetic number, because the mean of its divisors is an integer number (4914797276550).

Almost surely, 2^{100111200001212} is an apocalyptic number.

100111200001212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

100111200001212 is an abundant number, since it is smaller than the sum of its proper divisors (135799069273188).

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

100111200001212 is a wasteful number, since it uses less digits than its factorization.

100111200001212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1635006 (or 1635004 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 100111200001212 its reverse (212100002111001), we get a palindrome (312211202112213).

The spelling of 100111200001212 in words is "one hundred trillion, one hundred eleven billion, two hundred million, one thousand, two hundred twelve".