222538149 has 12 divisors (see below), whose sum is σ = 327509676. Its totient is φ = 145559232.

The previous prime is 222538139. The next prime is 222538153. The reversal of 222538149 is 941835222.

It is a happy number.

222538149 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 61121124 + 161417025 = 7818^2 + 12705^2 .

It is not a de Polignac number, because 222538149 - 2¹⁷ = 222407077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222538139) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 232792 + ... + 233745.

It is an arithmetic number, because the mean of its divisors is an integer number (27292473).

Almost surely, 2^222538149 is an apocalyptic number.

It is an amenable number.

222538149 is a deficient number, since it is larger than the sum of its proper divisors (104971527).

222538149 is a wasteful number, since it uses less digits than its factorization.

222538149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466596 (or 466593 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 222538149 is about 14917.7125927536. The cubic root of 222538149 is about 605.9937668868.

The spelling of 222538149 in words is "two hundred twenty-two million, five hundred thirty-eight thousand, one hundred forty-nine".