210201023221 has 8 divisors (see below), whose sum is σ = 240232553600. Its totient is φ = 180170196048.

The previous prime is 210201023189. The next prime is 210201023233. The reversal of 210201023221 is 122320102012.

It is a happy number.

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 210201023221 - 2⁵ = 210201023189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210201023195 and 210201023204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210201023281) 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, 920680 + ... + 1126078.

It is an arithmetic number, because the mean of its divisors is an integer number (30029069200).

Almost surely, 2^210201023221 is an apocalyptic number.

It is an amenable number.

210201023221 is a deficient number, since it is larger than the sum of its proper divisors (30031530379).

210201023221 is a wasteful number, since it uses less digits than its factorization.

210201023221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351603.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 210201023221 its reverse (122320102012), we get a palindrome (332521125233).

The spelling of 210201023221 in words is "two hundred ten billion, two hundred one million, twenty-three thousand, two hundred twenty-one".