2123441421 has 8 divisors (see below), whose sum is σ = 2856311040. Its totient is φ = 1403099712.

The previous prime is 2123441417. The next prime is 2123441431. The reversal of 2123441421 is 1241443212.

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

It is not a de Polignac number, because 2123441421 - 2² = 2123441417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2123441391 and 2123441400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123441401) 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, 3131581 + ... + 3132258.

It is an arithmetic number, because the mean of its divisors is an integer number (357038880).

Almost surely, 2^2123441421 is an apocalyptic number.

It is an amenable number.

2123441421 is a deficient number, since it is larger than the sum of its proper divisors (732869619).

2123441421 is a wasteful number, since it uses less digits than its factorization.

2123441421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6263955.

The product of its digits is 1536, while the sum is 24.

The square root of 2123441421 is about 46080.8140227579. The cubic root of 2123441421 is about 1285.3264011592.

Adding to 2123441421 its reverse (1241443212), we get a palindrome (3364884633).

The spelling of 2123441421 in words is "two billion, one hundred twenty-three million, four hundred forty-one thousand, four hundred twenty-one".