214239121 has 2 divisors, whose sum is σ = 214239122. Its totient is φ = 214239120.

The previous prime is 214239031. The next prime is 214239127. The reversal of 214239121 is 121932412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 197796096 + 16443025 = 14064^2 + 4055^2 .

It is a cyclic number.

It is not a de Polignac number, because 214239121 - 2¹¹ = 214237073 is a prime.

It is not a weakly prime, because it can be changed into another prime (214239127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107119560 + 107119561.

It is an arithmetic number, because the mean of its divisors is an integer number (107119561).

Almost surely, 2^214239121 is an apocalyptic number.

It is an amenable number.

214239121 is a deficient number, since it is larger than the sum of its proper divisors (1).

214239121 is an equidigital number, since it uses as much as digits as its factorization.

214239121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 25.

The square root of 214239121 is about 14636.9095440260. The cubic root of 214239121 is about 598.3651057289.

It can be divided in two parts, 2142391 and 21, that added together give a palindrome (2142412).

The spelling of 214239121 in words is "two hundred fourteen million, two hundred thirty-nine thousand, one hundred twenty-one".