214220145 has 32 divisors (see below), whose sum is σ = 363916800. Its totient is φ = 107233280.

The previous prime is 214220143. The next prime is 214220159. The reversal of 214220145 is 541022412.

It is not a de Polignac number, because 214220145 - 2¹ = 214220143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (214220141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 113560 + ... + 115430.

It is an arithmetic number, because the mean of its divisors is an integer number (11372400).

Almost surely, 2^214220145 is an apocalyptic number.

It is an amenable number.

214220145 is a deficient number, since it is larger than the sum of its proper divisors (149696655).

214220145 is a wasteful number, since it uses less digits than its factorization.

214220145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2345.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 214220145 is about 14636.2613054017. The cubic root of 214220145 is about 598.3474386918.

Adding to 214220145 its reverse (541022412), we get a palindrome (755242557).

The spelling of 214220145 in words is "two hundred fourteen million, two hundred twenty thousand, one hundred forty-five".