211221101201 has 8 divisors (see below), whose sum is σ = 235325637504. Its totient is φ = 187933667920.

The previous prime is 211221101191. The next prime is 211221101227. The reversal of 211221101201 is 102101122112.

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 211221101201 - 2⁶ = 211221101137 is a prime.

It is a super-2 number, since 2×211221101201² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211221101261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 204275210 + ... + 204276243.

It is an arithmetic number, because the mean of its divisors is an integer number (29415704688).

Almost surely, 2^211221101201 is an apocalyptic number.

It is an amenable number.

211221101201 is a deficient number, since it is larger than the sum of its proper divisors (24104536303).

211221101201 is a wasteful number, since it uses less digits than its factorization.

211221101201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408551511.

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

Adding to 211221101201 its reverse (102101122112), we get a palindrome (313322223313).

The spelling of 211221101201 in words is "two hundred eleven billion, two hundred twenty-one million, one hundred one thousand, two hundred one".