100111121312 has 12 divisors (see below), whose sum is σ = 197093770146. Its totient is φ = 50055560640.

The previous prime is 100111121261. The next prime is 100111121317. The reversal of 100111121312 is 213121111001.

It can be written as a sum of positive squares in only one way, i.e., 79431530896 + 20679590416 = 281836^2 + 143804^2 .

It is a super-2 number, since 2×100111121312² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (100111121317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1564236239 + ... + 1564236302.

Almost surely, 2^100111121312 is an apocalyptic number.

It is an amenable number.

100111121312 is a deficient number, since it is larger than the sum of its proper divisors (96982648834).

100111121312 is an equidigital number, since it uses as much as digits as its factorization.

100111121312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3128472551 (or 3128472543 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 100111121312 its reverse (213121111001), we get a palindrome (313232232313).

The spelling of 100111121312 in words is "one hundred billion, one hundred eleven million, one hundred twenty-one thousand, three hundred twelve".