100105445412 has 72 divisors (see below), whose sum is σ = 289250876096. Its totient is φ = 28595882304.

The previous prime is 100105445411. The next prime is 100105445413. The reversal of 100105445412 is 214544501001.

100105445412 is a `hidden beast` number, since 10 + 0 + 105 + 4 + 4 + 541 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (100105445411) and next prime (100105445413).

It is a super-2 number, since 2×100105445412² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (100105445411) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1327383 + ... + 1400769.

Almost surely, 2^100105445412 is an apocalyptic number.

100105445412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

100105445412 is an abundant number, since it is smaller than the sum of its proper divisors (189145430684).

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

100105445412 is a wasteful number, since it uses less digits than its factorization.

100105445412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78817 (or 78812 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

Adding to 100105445412 its reverse (214544501001), we get a palindrome (314649946413).

The spelling of 100105445412 in words is "one hundred billion, one hundred five million, four hundred forty-five thousand, four hundred twelve".