201451222 has 16 divisors (see below), whose sum is σ = 345758112. Its totient is φ = 86232960.

The previous prime is 201451189. The next prime is 201451223. The reversal of 201451222 is 222154102.

It is a self number, because there is not a number n which added to its sum of digits gives 201451222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201451223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4168 + ... + 20500.

It is an arithmetic number, because the mean of its divisors is an integer number (21609882).

Almost surely, 2^201451222 is an apocalyptic number.

201451222 is a deficient number, since it is larger than the sum of its proper divisors (144306890).

201451222 is a wasteful number, since it uses less digits than its factorization.

201451222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17223.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 201451222 is about 14193.3513308168. The cubic root of 201451222 is about 586.2146064833.

The spelling of 201451222 in words is "two hundred one million, four hundred fifty-one thousand, two hundred twenty-two".