105533121 has 4 divisors (see below), whose sum is σ = 140710832. Its totient is φ = 70355412.

The previous prime is 105533081. The next prime is 105533143. The reversal of 105533121 is 121335501.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 105533121 - 2¹⁴ = 105516737 is a prime.

It is a super-2 number, since 2×105533121² = 22274479256001282, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (105533191) 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, 17588851 + ... + 17588856.

It is an arithmetic number, because the mean of its divisors is an integer number (35177708).

Almost surely, 2^105533121 is an apocalyptic number.

It is an amenable number.

105533121 is a deficient number, since it is larger than the sum of its proper divisors (35177711).

105533121 is an equidigital number, since it uses as much as digits as its factorization.

105533121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35177710.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 105533121 is about 10272.9314706173. The cubic root of 105533121 is about 472.5664954987.

Adding to 105533121 its reverse (121335501), we get a palindrome (226868622).

The spelling of 105533121 in words is "one hundred five million, five hundred thirty-three thousand, one hundred twenty-one".