201555222 has 32 divisors (see below), whose sum is σ = 442986624. Its totient is φ = 60628800.

The previous prime is 201555161. The next prime is 201555227. The reversal of 201555222 is 222555102.

It is a junction number, because it is equal to n+sod(n) for n = 201555192 and 201555201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201555227) 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 15 ways as a sum of consecutive naturals, for example, 2104 + ... + 20187.

It is an arithmetic number, because the mean of its divisors is an integer number (13843332).

Almost surely, 2^201555222 is an apocalyptic number.

201555222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

201555222 is an abundant number, since it is smaller than the sum of its proper divisors (241431402).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201555222 is a wasteful number, since it uses less digits than its factorization.

201555222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22444.

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 201555222 is about 14197.0145453190. The cubic root of 201555222 is about 586.3154676745.

The spelling of 201555222 in words is "two hundred one million, five hundred fifty-five thousand, two hundred twenty-two".