103128821108 has 6 divisors (see below), whose sum is σ = 180475436946. Its totient is φ = 51564410552.

The previous prime is 103128821099. The next prime is 103128821119. The reversal of 103128821108 is 801128821301.

It can be written as a sum of positive squares in only one way, i.e., 57990419344 + 45138401764 = 240812^2 + 212458^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12891102635 + ... + 12891102642.

It is an arithmetic number, because the mean of its divisors is an integer number (30079239491).

Almost surely, 2^103128821108 is an apocalyptic number.

It is an amenable number.

103128821108 is a deficient number, since it is larger than the sum of its proper divisors (77346615838).

103128821108 is a wasteful number, since it uses less digits than its factorization.

103128821108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25782205281 (or 25782205279 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 35.

The spelling of 103128821108 in words is "one hundred three billion, one hundred twenty-eight million, eight hundred twenty-one thousand, one hundred eight".