214512121 has 2 divisors, whose sum is σ = 214512122. Its totient is φ = 214512120.

The previous prime is 214512119. The next prime is 214512139. The reversal of 214512121 is 121215412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 127351225 + 87160896 = 11285^2 + 9336^2 .

It is a cyclic number.

It is not a de Polignac number, because 214512121 - 2¹ = 214512119 is a prime.

Together with 214512119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (214512821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107256060 + 107256061.

It is an arithmetic number, because the mean of its divisors is an integer number (107256061).

Almost surely, 2^214512121 is an apocalyptic number.

It is an amenable number.

214512121 is a deficient number, since it is larger than the sum of its proper divisors (1).

214512121 is an equidigital number, since it uses as much as digits as its factorization.

214512121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 160, while the sum is 19.

The square root of 214512121 is about 14646.2323141482. The cubic root of 214512121 is about 598.6191588265.

Adding to 214512121 its reverse (121215412), we get a palindrome (335727533).

It can be divided in two parts, 214512 and 121, that multiplied together give a palindrome (25955952).

The spelling of 214512121 in words is "two hundred fourteen million, five hundred twelve thousand, one hundred twenty-one".