201230221321000 has 64 divisors (see below), whose sum is σ = 487115915130000. Its totient is φ = 77716499257600.

The previous prime is 201230221320979. The next prime is 201230221321009. The reversal of 201230221321000 is 123122032102.

It can be written as a sum of positive squares in 8 ways, for example, as 434009534436 + 200796211786564 = 658794^2 + 14170258^2 .

It is not an unprimeable number, because it can be changed into a prime (201230221321009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3469457575 + ... + 3469515574.

Almost surely, 2^{201230221321000} is an apocalyptic number.

201230221321000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201230221321000 is an abundant number, since it is smaller than the sum of its proper divisors (285885693809000).

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

201230221321000 is a wasteful number, since it uses less digits than its factorization.

201230221321000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6938973199 (or 6938973185 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 201230221321000 its reverse (123122032102), we get a palindrome (201353343353102).

The spelling of 201230221321000 in words is "two hundred one trillion, two hundred thirty billion, two hundred twenty-one million, three hundred twenty-one thousand".