14212121 has 16 divisors (see below), whose sum is σ = 17802240. Its totient is φ = 11022480.

The previous prime is 14212103. The next prime is 14212127. The reversal of 14212121 is 12121241.

It is a happy number.

14212121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 14212121 - 2¹⁰ = 14211097 is a prime.

It is a Duffinian number.

14212121 is a modest number, since divided by 2121 gives 1421 as remainder.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 14212096 and 14212105.

It is not an unprimeable number, because it can be changed into a prime (14212127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28940 + ... + 29426.

It is an arithmetic number, because the mean of its divisors is an integer number (1112640).

Almost surely, 2^14212121 is an apocalyptic number.

14212121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

14212121 is a deficient number, since it is larger than the sum of its proper divisors (3590119).

14212121 is a wasteful number, since it uses less digits than its factorization.

14212121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 884.

The product of its digits is 32, while the sum is 14.

The square root of 14212121 is about 3769.8966829344. The cubic root of 14212121 is about 242.2253723167.

Adding to 14212121 its reverse (12121241), we get a palindrome (26333362).

The spelling of 14212121 in words is "fourteen million, two hundred twelve thousand, one hundred twenty-one".