210201101101221 has 8 divisors (see below), whose sum is σ = 296754495672384. Its totient is φ = 131890886965440.

The previous prime is 210201101101183. The next prime is 210201101101301. The reversal of 210201101101221 is 122101101102012.

It is a happy number.

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

It is not a de Polignac number, because 210201101101221 - 2²⁹ = 210200564230309 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 210201101101221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210201101108221) 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, 2060795108785 + ... + 2060795108886.

It is an arithmetic number, because the mean of its divisors is an integer number (37094311959048).

Almost surely, 2^{210201101101221} is an apocalyptic number.

It is an amenable number.

210201101101221 is a deficient number, since it is larger than the sum of its proper divisors (86553394571163).

210201101101221 is a wasteful number, since it uses less digits than its factorization.

210201101101221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4121590217691.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 210201101101221 its reverse (122101101102012), we get a palindrome (332302202203233).

The spelling of 210201101101221 in words is "two hundred ten trillion, two hundred one billion, one hundred one million, one hundred one thousand, two hundred twenty-one".