105120503540521 has 8 divisors (see below), whose sum is σ = 120140044876800. Its totient is φ = 90101543840448.

The previous prime is 105120503540509. The next prime is 105120503540557. The reversal of 105120503540521 is 125045305021501.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 105120503540521 - 2⁵ = 105120503540489 is a prime.

It is a super-2 number, since 2×105120503540521² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105120503540021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145021696 + ... + 145744753.

It is an arithmetic number, because the mean of its divisors is an integer number (15017505609600).

Almost surely, 2^{105120503540521} is an apocalyptic number.

It is an amenable number.

105120503540521 is a deficient number, since it is larger than the sum of its proper divisors (15019541336279).

105120503540521 is an equidigital number, since it uses as much as digits as its factorization.

105120503540521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290818103.

The product of its (nonzero) digits is 30000, while the sum is 34.

The spelling of 105120503540521 in words is "one hundred five trillion, one hundred twenty billion, five hundred three million, five hundred forty thousand, five hundred twenty-one".