100121434108 has 12 divisors (see below), whose sum is σ = 185519128032. Its totient is φ = 47115968960.

The previous prime is 100121434099. The next prime is 100121434109. The reversal of 100121434108 is 801434121001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100121434109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 736186948 + ... + 736187083.

It is an arithmetic number, because the mean of its divisors is an integer number (15459927336).

Almost surely, 2^100121434108 is an apocalyptic number.

It is an amenable number.

100121434108 is a deficient number, since it is larger than the sum of its proper divisors (85397693924).

100121434108 is a wasteful number, since it uses less digits than its factorization.

100121434108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1472374052 (or 1472374050 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 25.

Adding to 100121434108 its reverse (801434121001), we get a palindrome (901555555109).

The spelling of 100121434108 in words is "one hundred billion, one hundred twenty-one million, four hundred thirty-four thousand, one hundred eight".