2121323030223 has 32 divisors (see below), whose sum is σ = 2904767006400. Its totient is φ = 1376226508800.

The previous prime is 2121323030213. The next prime is 2121323030243. The reversal of 2121323030223 is 3220303231212.

It is not a de Polignac number, because 2121323030223 - 2⁵ = 2121323030191 is a prime.

It is a super-2 number, since 2×2121323030223² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2121323030193 and 2121323030202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121323030213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 84270583 + ... + 84295751.

It is an arithmetic number, because the mean of its divisors is an integer number (90773968950).

Almost surely, 2^{2121323030223} is an apocalyptic number.

2121323030223 is a deficient number, since it is larger than the sum of its proper divisors (783443976177).

2121323030223 is a wasteful number, since it uses less digits than its factorization.

2121323030223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26923.

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 2121323030223 its reverse (3220303231212), we get a palindrome (5341626261435).

The spelling of 2121323030223 in words is "two trillion, one hundred twenty-one billion, three hundred twenty-three million, thirty thousand, two hundred twenty-three".