149305221 has 32 divisors (see below), whose sum is σ = 241512320. Its totient is φ = 90605952.

The previous prime is 149305199. The next prime is 149305241. The reversal of 149305221 is 122503941.

149305221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 149305221 - 2⁶ = 149305157 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149305241) 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, 22710 + ... + 28536.

It is an arithmetic number, because the mean of its divisors is an integer number (7547260).

Almost surely, 2^149305221 is an apocalyptic number.

It is an amenable number.

149305221 is a deficient number, since it is larger than the sum of its proper divisors (92207099).

149305221 is a wasteful number, since it uses less digits than its factorization.

149305221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5922 (or 5916 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 149305221 is about 12219.0515589386. The cubic root of 149305221 is about 530.5076671235.

The spelling of 149305221 in words is "one hundred forty-nine million, three hundred five thousand, two hundred twenty-one".