100120210984 has 8 divisors (see below), whose sum is σ = 187725395610. Its totient is φ = 50060105488.

The previous prime is 100120210963. The next prime is 100120210987. The reversal of 100120210984 is 489012021001.

It can be written as a sum of positive squares in only one way, i.e., 92794562884 + 7325648100 = 304622^2 + 85590^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (100120210987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6257513179 + ... + 6257513194.

Almost surely, 2^100120210984 is an apocalyptic number.

It is an amenable number.

100120210984 is a deficient number, since it is larger than the sum of its proper divisors (87605184626).

100120210984 is a wasteful number, since it uses less digits than its factorization.

100120210984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12515026379 (or 12515026375 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 28.

Adding to 100120210984 its reverse (489012021001), we get a palindrome (589132231985).

The spelling of 100120210984 in words is "one hundred billion, one hundred twenty million, two hundred ten thousand, nine hundred eighty-four".