105100100 has 108 divisors (see below), whose sum is σ = 269396820. Its totient is φ = 35481600.

The previous prime is 105100049. The next prime is 105100109. The reversal of 105100100 is 1001501.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 3211264 + 101888836 = 1792^2 + 10094^2 .

It is a super-2 number, since 2×105100100² = 22092062040020000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (105100109) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 435980 + ... + 436220.

It is an arithmetic number, because the mean of its divisors is an integer number (2494415).

Almost surely, 2^105100100 is an apocalyptic number.

105100100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 105100100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134698410).

105100100 is an abundant number, since it is smaller than the sum of its proper divisors (164296720).

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

105100100 is a wasteful number, since it uses less digits than its factorization.

105100100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358 (or 344 counting only the distinct ones).

The product of its (nonzero) digits is 5, while the sum is 8.

The square root of 105100100 is about 10251.8339822687. The cubic root of 105100100 is about 471.9192682472.

Adding to 105100100 its reverse (1001501), we get a palindrome (106101601).

The spelling of 105100100 in words is "one hundred five million, one hundred thousand, one hundred".