101221210211211 has 12 divisors (see below), whose sum is σ = 147656022817680. Its totient is φ = 66812680006800.

The previous prime is 101221210211153. The next prime is 101221210211221. The reversal of 101221210211211 is 112112012122101.

It is a happy number.

101221210211211 is a `hidden beast` number, since 1 + 0 + 1 + 221 + 21 + 0 + 211 + 211 = 666.

It is not a de Polignac number, because 101221210211211 - 2¹⁴ = 101221210194827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (101221210211221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55677232431 + ... + 55677234248.

It is an arithmetic number, because the mean of its divisors is an integer number (12304668568140).

Almost surely, 2^{101221210211211} is an apocalyptic number.

101221210211211 is a deficient number, since it is larger than the sum of its proper divisors (46434812606469).

101221210211211 is a wasteful number, since it uses less digits than its factorization.

101221210211211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111354466786 (or 111354466783 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 101221210211211 its reverse (112112012122101), we get a palindrome (213333222333312).

The spelling of 101221210211211 in words is "one hundred one trillion, two hundred twenty-one billion, two hundred ten million, two hundred eleven thousand, two hundred eleven".