105320221540 has 12 divisors (see below), whose sum is σ = 221172465276. Its totient is φ = 42128088608.

The previous prime is 105320221529. The next prime is 105320221673. The reversal of 105320221540 is 45122023501.

It can be written as a sum of positive squares in 2 ways, for example, as 70751744064 + 34568477476 = 265992^2 + 185926^2 .

It is a super-2 number, since 2×105320221540² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2633005519 + ... + 2633005558.

It is an arithmetic number, because the mean of its divisors is an integer number (18431038773).

Almost surely, 2^105320221540 is an apocalyptic number.

105320221540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

105320221540 is an abundant number, since it is smaller than the sum of its proper divisors (115852243736).

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

105320221540 is a wasteful number, since it uses less digits than its factorization.

105320221540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5266011086 (or 5266011084 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The spelling of 105320221540 in words is "one hundred five billion, three hundred twenty million, two hundred twenty-one thousand, five hundred forty".