214121240209 has 2 divisors, whose sum is σ = 214121240210. Its totient is φ = 214121240208.

The previous prime is 214121240153. The next prime is 214121240227. The reversal of 214121240209 is 902042121412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 199505155600 + 14616084609 = 446660^2 + 120897^2 .

It is a cyclic number.

It is not a de Polignac number, because 214121240209 - 2²⁷ = 213987022481 is a prime.

It is not a weakly prime, because it can be changed into another prime (214121240009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107060620104 + 107060620105.

It is an arithmetic number, because the mean of its divisors is an integer number (107060620105).

Almost surely, 2^214121240209 is an apocalyptic number.

It is an amenable number.

214121240209 is a deficient number, since it is larger than the sum of its proper divisors (1).

214121240209 is an equidigital number, since it uses as much as digits as its factorization.

214121240209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 28.

It can be divided in two parts, 21412 and 1240209, that added together give a palindrome (1261621).

The spelling of 214121240209 in words is "two hundred fourteen billion, one hundred twenty-one million, two hundred forty thousand, two hundred nine".