105551322100 has 72 divisors (see below), whose sum is σ = 277165385280. Its totient is φ = 34060254720.

The previous prime is 105551322047. The next prime is 105551322119. The reversal of 105551322100 is 1223155501.

It is a super-2 number, since 2×105551322100² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4423030 + ... + 4446829.

It is an arithmetic number, because the mean of its divisors is an integer number (3849519240).

Almost surely, 2^105551322100 is an apocalyptic number.

105551322100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

105551322100 is an abundant number, since it is smaller than the sum of its proper divisors (171614063180).

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

105551322100 is a wasteful number, since it uses less digits than its factorization.

105551322100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8869897 (or 8869890 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 25.

Adding to 105551322100 its reverse (1223155501), we get a palindrome (106774477601).

The spelling of 105551322100 in words is "one hundred five billion, five hundred fifty-one million, three hundred twenty-two thousand, one hundred".