100203223203121 has 4 divisors (see below), whose sum is σ = 100782432585972. Its totient is φ = 99624013820272.

The previous prime is 100203223203107. The next prime is 100203223203137. The reversal of 100203223203121 is 121302322302001.

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 60775058938896 + 39428164264225 = 7795836^2 + 6279185^2 .

It is a cyclic number.

It is not a de Polignac number, because 100203223203121 - 2⁹ = 100203223202609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100203223203092 and 100203223203101.

It is not an unprimeable number, because it can be changed into a prime (100203223203151) 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, 289604691166 + ... + 289604691511.

It is an arithmetic number, because the mean of its divisors is an integer number (25195608146493).

Almost surely, 2^{100203223203121} is an apocalyptic number.

It is an amenable number.

100203223203121 is a deficient number, since it is larger than the sum of its proper divisors (579209382851).

100203223203121 is an equidigital number, since it uses as much as digits as its factorization.

100203223203121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 579209382850.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 100203223203121 its reverse (121302322302001), we get a palindrome (221505545505122).

The spelling of 100203223203121 in words is "one hundred trillion, two hundred three billion, two hundred twenty-three million, two hundred three thousand, one hundred twenty-one".