2121001232223 has 8 divisors (see below), whose sum is σ = 2828571020928. Its totient is φ = 1413716132504.

The previous prime is 2121001232159. The next prime is 2121001232237. The reversal of 2121001232223 is 3222321001212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2121001232223 - 2⁶ = 2121001232159 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2121001232223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121001232123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71154861 + ... + 71184662.

It is an arithmetic number, because the mean of its divisors is an integer number (353571377616).

Almost surely, 2^{2121001232223} is an apocalyptic number.

2121001232223 is a deficient number, since it is larger than the sum of its proper divisors (707569788705).

2121001232223 is a wasteful number, since it uses less digits than its factorization.

2121001232223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142344493.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 2121001232223 its reverse (3222321001212), we get a palindrome (5343322233435).

The spelling of 2121001232223 in words is "two trillion, one hundred twenty-one billion, one million, two hundred thirty-two thousand, two hundred twenty-three".