14213121 has 16 divisors (see below), whose sum is σ = 21483840. Its totient is φ = 8285760.

The previous prime is 14213117. The next prime is 14213123. The reversal of 14213121 is 12131241.

It is not a de Polignac number, because 14213121 - 2² = 14213117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 14213121.

It is not an unprimeable number, because it can be changed into a prime (14213123) 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, 8850 + ... + 10331.

It is an arithmetic number, because the mean of its divisors is an integer number (1342740).

It is a Proth number, since it is equal to 1735 ⋅ 2¹³ + 1 and 1735 < 2¹³.

Almost surely, 2^14213121 is an apocalyptic number.

It is an amenable number.

14213121 is a deficient number, since it is larger than the sum of its proper divisors (7270719).

14213121 is a wasteful number, since it uses less digits than its factorization.

14213121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19216.

The product of its digits is 48, while the sum is 15.

The square root of 14213121 is about 3770.0293102309. The cubic root of 14213121 is about 242.2310533756.

Adding to 14213121 its reverse (12131241), we get a palindrome (26344362).

The spelling of 14213121 in words is "fourteen million, two hundred thirteen thousand, one hundred twenty-one".