105044532121 has 4 divisors (see below), whose sum is σ = 105713605732. Its totient is φ = 104375458512.

The previous prime is 105044532113. The next prime is 105044532127. The reversal of 105044532121 is 121235440501.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 40225918096 + 64818614025 = 200564^2 + 254595^2 .

It is a cyclic number.

It is not a de Polignac number, because 105044532121 - 2³ = 105044532113 is a prime.

It is a super-2 number, since 2×105044532121² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 105044532121.

It is not an unprimeable number, because it can be changed into a prime (105044532127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 334536570 + ... + 334536883.

It is an arithmetic number, because the mean of its divisors is an integer number (26428401433).

Almost surely, 2^105044532121 is an apocalyptic number.

It is an amenable number.

105044532121 is a deficient number, since it is larger than the sum of its proper divisors (669073611).

105044532121 is an equidigital number, since it uses as much as digits as its factorization.

105044532121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 669073610.

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 105044532121 its reverse (121235440501), we get a palindrome (226279972622).

The spelling of 105044532121 in words is "one hundred five billion, forty-four million, five hundred thirty-two thousand, one hundred twenty-one".