1000223242121 has 4 divisors (see below), whose sum is σ = 1000656054144. Its totient is φ = 999790430100.

The previous prime is 1000223242111. The next prime is 1000223242129. The reversal of 1000223242121 is 1212423220001.

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 1000223242121 - 2³⁸ = 725345335177 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1000223242093 and 1000223242102.

It is not an unprimeable number, because it can be changed into a prime (1000223242129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216402545 + ... + 216407166.

It is an arithmetic number, because the mean of its divisors is an integer number (250164013536).

Almost surely, 2^{1000223242121} is an apocalyptic number.

It is an amenable number.

1000223242121 is a deficient number, since it is larger than the sum of its proper divisors (432812023).

1000223242121 is an equidigital number, since it uses as much as digits as its factorization.

1000223242121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432812022.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 1000223242121 its reverse (1212423220001), we get a palindrome (2212646462122).

The spelling of 1000223242121 in words is "one trillion, two hundred twenty-three million, two hundred forty-two thousand, one hundred twenty-one".