149222221 has 8 divisors (see below), whose sum is σ = 153807584. Its totient is φ = 144666000.

The previous prime is 149222201. The next prime is 149222303. The reversal of 149222221 is 122222941.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 149222221 - 2¹¹ = 149220173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149222201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3346 + ... + 17596.

It is an arithmetic number, because the mean of its divisors is an integer number (19225948).

Almost surely, 2^149222221 is an apocalyptic number.

It is an amenable number.

149222221 is a deficient number, since it is larger than the sum of its proper divisors (4585363).

149222221 is a wasteful number, since it uses less digits than its factorization.

149222221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14571.

The product of its digits is 1152, while the sum is 25.

The square root of 149222221 is about 12215.6547511789. The cubic root of 149222221 is about 530.4093443770.

The spelling of 149222221 in words is "one hundred forty-nine million, two hundred twenty-two thousand, two hundred twenty-one".