100453121 has 4 divisors (see below), whose sum is σ = 104820672. Its totient is φ = 96085572.

The previous prime is 100453099. The next prime is 100453159. The reversal of 100453121 is 121354001.

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 a cyclic number.

It is not a de Polignac number, because 100453121 - 2¹⁰ = 100452097 is a prime.

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 100453121.

It is not an unprimeable number, because it can be changed into a prime (100453181) 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, 2183741 + ... + 2183786.

It is an arithmetic number, because the mean of its divisors is an integer number (26205168).

Almost surely, 2^100453121 is an apocalyptic number.

It is an amenable number.

100453121 is a deficient number, since it is larger than the sum of its proper divisors (4367551).

100453121 is an equidigital number, since it uses as much as digits as its factorization.

100453121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4367550.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 100453121 is about 10022.6304431521. The cubic root of 100453121 is about 464.8588942494.

The spelling of 100453121 in words is "one hundred million, four hundred fifty-three thousand, one hundred twenty-one".