105450520121 has 8 divisors (see below), whose sum is σ = 105547434144. Its totient is φ = 105353645760.

The previous prime is 105450520117. The next prime is 105450520127. The reversal of 105450520121 is 121025054501.

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

It is a cyclic number.

It is not a de Polignac number, because 105450520121 - 2² = 105450520117 is a prime.

It is a super-2 number, since 2×105450520121² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105450520127) 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, 8103206 + ... + 8116208.

It is an arithmetic number, because the mean of its divisors is an integer number (13193429268).

Almost surely, 2^105450520121 is an apocalyptic number.

It is an amenable number.

105450520121 is a deficient number, since it is larger than the sum of its proper divisors (96914023).

105450520121 is a wasteful number, since it uses less digits than its factorization.

105450520121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19831.

The product of its (nonzero) digits is 2000, while the sum is 26.

Adding to 105450520121 its reverse (121025054501), we get a palindrome (226475574622).

The spelling of 105450520121 in words is "one hundred five billion, four hundred fifty million, five hundred twenty thousand, one hundred twenty-one".