211201101221 has 8 divisors (see below), whose sum is σ = 230491833984. Its totient is φ = 191925473920.

The previous prime is 211201101127. The next prime is 211201101233. The reversal of 211201101221 is 122101102112.

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 211201101221 - 2¹⁸ = 211200839077 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211201101196 and 211201101205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211201101521) 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, 3747116 + ... + 3803061.

It is an arithmetic number, because the mean of its divisors is an integer number (28811479248).

Almost surely, 2^211201101221 is an apocalyptic number.

It is an amenable number.

211201101221 is a deficient number, since it is larger than the sum of its proper divisors (19290732763).

211201101221 is a wasteful number, since it uses less digits than its factorization.

211201101221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7552731.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 211201101221 its reverse (122101102112), we get a palindrome (333302203333).

The spelling of 211201101221 in words is "two hundred eleven billion, two hundred one million, one hundred one thousand, two hundred twenty-one".