101210111011221 has 32 divisors (see below), whose sum is σ = 142102060692480. Its totient is φ = 63898426972800.

The previous prime is 101210111011189. The next prime is 101210111011223. The reversal of 101210111011221 is 122110111012101.

It is not a de Polignac number, because 101210111011221 - 2⁵ = 101210111011189 is a prime.

It is a super-2 number, since 2×101210111011221² (a number of 29 digits) contains 22 as substring.

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 101210111011221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101210111011223) 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 31 ways as a sum of consecutive naturals, for example, 3711258816 + ... + 3711286086.

It is an arithmetic number, because the mean of its divisors is an integer number (4440689396640).

Almost surely, 2^{101210111011221} is an apocalyptic number.

It is an amenable number.

101210111011221 is a deficient number, since it is larger than the sum of its proper divisors (40891949681259).

101210111011221 is a wasteful number, since it uses less digits than its factorization.

101210111011221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49097.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 101210111011221 its reverse (122110111012101), we get a palindrome (223320222023322).

The spelling of 101210111011221 in words is "one hundred one trillion, two hundred ten billion, one hundred eleven million, eleven thousand, two hundred twenty-one".