202401023221 has 8 divisors (see below), whose sum is σ = 207099747000. Its totient is φ = 197746837440.

The previous prime is 202401023207. The next prime is 202401023267. The reversal of 202401023221 is 122320104202.

It can be written as a sum of positive squares in 4 ways, for example, as 47569791025 + 154831232196 = 218105^2 + 393486^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 202401023221 - 2¹⁹ = 202400498933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202401023921) 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, 11125306 + ... + 11143483.

It is an arithmetic number, because the mean of its divisors is an integer number (25887468375).

Almost surely, 2^202401023221 is an apocalyptic number.

It is an amenable number.

202401023221 is a deficient number, since it is larger than the sum of its proper divisors (4698723779).

202401023221 is a wasteful number, since it uses less digits than its factorization.

202401023221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22268999.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 202401023221 its reverse (122320104202), we get a palindrome (324721127423).

The spelling of 202401023221 in words is "two hundred two billion, four hundred one million, twenty-three thousand, two hundred twenty-one".