201322155 has 16 divisors (see below), whose sum is σ = 322511904. Its totient is φ = 107239680.

The previous prime is 201322141. The next prime is 201322181. The reversal of 201322155 is 551223102.

It is not a de Polignac number, because 201322155 - 2⁴ = 201322139 is a prime.

It is a super-2 number, since 2×201322155² = 81061220187688050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5025 + ... + 20685.

It is an arithmetic number, because the mean of its divisors is an integer number (20156994).

Almost surely, 2^201322155 is an apocalyptic number.

201322155 is a deficient number, since it is larger than the sum of its proper divisors (121189749).

201322155 is a wasteful number, since it uses less digits than its factorization.

201322155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16526.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 201322155 is about 14188.8038607911. The cubic root of 201322155 is about 586.0893865517.

Adding to 201322155 its reverse (551223102), we get a palindrome (752545257).

The spelling of 201322155 in words is "two hundred one million, three hundred twenty-two thousand, one hundred fifty-five".