2121403223 has 8 divisors (see below), whose sum is σ = 2131913520. Its totient is φ = 2110907520.

The previous prime is 2121403211. The next prime is 2121403261. The reversal of 2121403223 is 3223041212.

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 2121403223 - 2¹² = 2121399127 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2121403195 and 2121403204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121423223) 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, 387461 + ... + 392897.

It is an arithmetic number, because the mean of its divisors is an integer number (266489190).

Almost surely, 2^2121403223 is an apocalyptic number.

2121403223 is a deficient number, since it is larger than the sum of its proper divisors (10510297).

2121403223 is a wasteful number, since it uses less digits than its factorization.

2121403223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7297.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 2121403223 is about 46058.6932402560. The cubic root of 2121403223 is about 1284.9150267560.

Adding to 2121403223 its reverse (3223041212), we get a palindrome (5344444435).

The spelling of 2121403223 in words is "two billion, one hundred twenty-one million, four hundred three thousand, two hundred twenty-three".