210201021101221 has 8 divisors (see below), whose sum is σ = 210688996104000. Its totient is φ = 209713134193920.

The previous prime is 210201021101171. The next prime is 210201021101231. The reversal of 210201021101221 is 122101120102012.

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 210201021101221 - 2³¹ = 210198873617573 is a prime.

It is a super-2 number, since 2×210201021101221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210201021101195 and 210201021101204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210201021101231) 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, 17245011 + ... + 26791648.

It is an arithmetic number, because the mean of its divisors is an integer number (26336124513000).

Almost surely, 2^{210201021101221} is an apocalyptic number.

It is an amenable number.

210201021101221 is a deficient number, since it is larger than the sum of its proper divisors (487975002779).

210201021101221 is a wasteful number, since it uses less digits than its factorization.

210201021101221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44047739.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 210201021101221 its reverse (122101120102012), we get a palindrome (332302141203233).

The spelling of 210201021101221 in words is "two hundred ten trillion, two hundred one billion, twenty-one million, one hundred one thousand, two hundred twenty-one".