201223231133221 has 32 divisors (see below), whose sum is σ = 230276848582656. Its totient is φ = 174047655936000.

The previous prime is 201223231133191. The next prime is 201223231133233. The reversal of 201223231133221 is 122331132322102.

It is not a de Polignac number, because 201223231133221 - 2¹⁵ = 201223231100453 is a prime.

It is a super-2 number, since 2×201223231133221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201223231133221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201223231173221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 679804965 + ... + 680100901.

It is an arithmetic number, because the mean of its divisors is an integer number (7196151518208).

Almost surely, 2^{201223231133221} is an apocalyptic number.

It is an amenable number.

201223231133221 is a deficient number, since it is larger than the sum of its proper divisors (29053617449435).

201223231133221 is a wasteful number, since it uses less digits than its factorization.

201223231133221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310233.

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 201223231133221 its reverse (122331132322102), we get a palindrome (323554363455323).

The spelling of 201223231133221 in words is "two hundred one trillion, two hundred twenty-three billion, two hundred thirty-one million, one hundred thirty-three thousand, two hundred twenty-one".