2123010421 has 8 divisors (see below), whose sum is σ = 2426632704. Its totient is φ = 1819471920.

The previous prime is 2123010403. The next prime is 2123010431. The reversal of 2123010421 is 1240103212.

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

It is not a de Polignac number, because 2123010421 - 2¹¹ = 2123008373 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2123010395 and 2123010404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123010401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48891 + ... + 81463.

It is an arithmetic number, because the mean of its divisors is an integer number (303329088).

Almost surely, 2^2123010421 is an apocalyptic number.

It is an amenable number.

2123010421 is a deficient number, since it is larger than the sum of its proper divisors (303622283).

2123010421 is an equidigital number, since it uses as much as digits as its factorization.

2123010421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41891.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 2123010421 is about 46076.1372187383. The cubic root of 2123010421 is about 1285.2394333471.

Adding to 2123010421 its reverse (1240103212), we get a palindrome (3363113633).

The spelling of 2123010421 in words is "two billion, one hundred twenty-three million, ten thousand, four hundred twenty-one".