200231130021221 has 8 divisors (see below), whose sum is σ = 219702081707640. Its totient is φ = 181341400773312.

The previous prime is 200231130021119. The next prime is 200231130021271. The reversal of 200231130021221 is 122120031132002.

It can be written as a sum of positive squares in 4 ways, for example, as 9190052880100 + 191041077141121 = 3031510^2 + 13821761^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 200231130021221 - 2¹⁰ = 200231130020197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200231130021193 and 200231130021202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200231130021271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145305608906 + ... + 145305610283.

It is an arithmetic number, because the mean of its divisors is an integer number (27462760213455).

Almost surely, 2^{200231130021221} is an apocalyptic number.

It is an amenable number.

200231130021221 is a deficient number, since it is larger than the sum of its proper divisors (19470951686419).

200231130021221 is a wasteful number, since it uses less digits than its factorization.

200231130021221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290611219255.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 200231130021221 its reverse (122120031132002), we get a palindrome (322351161153223).

The spelling of 200231130021221 in words is "two hundred trillion, two hundred thirty-one billion, one hundred thirty million, twenty-one thousand, two hundred twenty-one".