2121001033223 has 4 divisors (see below), whose sum is σ = 2141593276368. Its totient is φ = 2100408790080.

The previous prime is 2121001033171. The next prime is 2121001033243. The reversal of 2121001033223 is 3223301001212.

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

It is a cyclic number.

It is not a de Polignac number, because 2121001033223 - 2¹⁸ = 2121000771079 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2121001033195 and 2121001033204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121001033243) 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, 10296121418 + ... + 10296121623.

It is an arithmetic number, because the mean of its divisors is an integer number (535398319092).

Almost surely, 2^{2121001033223} is an apocalyptic number.

2121001033223 is a deficient number, since it is larger than the sum of its proper divisors (20592243145).

2121001033223 is a wasteful number, since it uses less digits than its factorization.

2121001033223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20592243144.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 2121001033223 its reverse (3223301001212), we get a palindrome (5344302034435).

The spelling of 2121001033223 in words is "two trillion, one hundred twenty-one billion, one million, thirty-three thousand, two hundred twenty-three".