203141213212221 has 6 divisors (see below), whose sum is σ = 293426196862110. Its totient is φ = 135427475474808.

The previous prime is 203141213212199. The next prime is 203141213212321. The reversal of 203141213212221 is 122212312141302.

203141213212221 is a `hidden beast` number, since 2 + 0 + 3 + 1 + 412 + 1 + 3 + 21 + 2 + 221 = 666.

It can be written as a sum of positive squares in only one way, i.e., 185693466509721 + 17447746702500 = 13626939^2 + 4177050^2 .

It is not a de Polignac number, because 203141213212221 - 2²¹ = 203141211115069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203141213212321) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11285622956226 + ... + 11285622956243.

It is an arithmetic number, because the mean of its divisors is an integer number (48904366143685).

Almost surely, 2^{203141213212221} is an apocalyptic number.

It is an amenable number.

203141213212221 is a deficient number, since it is larger than the sum of its proper divisors (90284983649889).

203141213212221 is a wasteful number, since it uses less digits than its factorization.

203141213212221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22571245912475 (or 22571245912472 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

Adding to 203141213212221 its reverse (122212312141302), we get a palindrome (325353525353523).

The spelling of 203141213212221 in words is "two hundred three trillion, one hundred forty-one billion, two hundred thirteen million, two hundred twelve thousand, two hundred twenty-one".