100111121012 has 48 divisors (see below), whose sum is σ = 205009392000. Its totient is φ = 41890286592.

The previous prime is 100111120957. The next prime is 100111121027. The reversal of 100111121012 is 210121111001.

It is a junction number, because it is equal to n+sod(n) for n = 100111120984 and 100111121002.

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, 24137 + ... + 448112.

It is an arithmetic number, because the mean of its divisors is an integer number (4271029000).

Almost surely, 2^100111121012 is an apocalyptic number.

It is an amenable number.

100111121012 is an abundant number, since it is smaller than the sum of its proper divisors (104898270988).

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

100111121012 is a wasteful number, since it uses less digits than its factorization.

100111121012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472440 (or 472438 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 100111121012 its reverse (210121111001), we get a palindrome (310232232013).

The spelling of 100111121012 in words is "one hundred billion, one hundred eleven million, one hundred twenty-one thousand, twelve".