146221207 has 16 divisors (see below), whose sum is σ = 168664320. Its totient is φ = 125366400.

The previous prime is 146221139. The next prime is 146221213. The reversal of 146221207 is 702122641.

146221207 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-146221207 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146221237) 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, 48918 + ... + 51820.

It is an arithmetic number, because the mean of its divisors is an integer number (10541520).

Almost surely, 2^146221207 is an apocalyptic number.

146221207 is a deficient number, since it is larger than the sum of its proper divisors (22443113).

146221207 is a wasteful number, since it uses less digits than its factorization.

146221207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3174.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 146221207 is about 12092.1961198121. The cubic root of 146221207 is about 526.8295437500.

Adding to 146221207 its reverse (702122641), we get a palindrome (848343848).

The spelling of 146221207 in words is "one hundred forty-six million, two hundred twenty-one thousand, two hundred seven".