100120121012 has 12 divisors (see below), whose sum is σ = 177016503300. Its totient is φ = 49543977216.

The previous prime is 100120120963. The next prime is 100120121053. The reversal of 100120121012 is 210121021001.

It can be written as a sum of positive squares in 2 ways, for example, as 67660333456 + 32459787556 = 260116^2 + 180166^2 .

It is a junction number, because it is equal to n+sod(n) for n = 100120120984 and 100120121002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129020387 + ... + 129021162.

It is an arithmetic number, because the mean of its divisors is an integer number (14751375275).

Almost surely, 2^100120121012 is an apocalyptic number.

It is an amenable number.

100120121012 is a deficient number, since it is larger than the sum of its proper divisors (76896382288).

100120121012 is a wasteful number, since it uses less digits than its factorization.

100120121012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258041650 (or 258041648 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 100120121012 its reverse (210121021001), we get a palindrome (310241142013).

The spelling of 100120121012 in words is "one hundred billion, one hundred twenty million, one hundred twenty-one thousand, twelve".