2011221221101 has 8 divisors (see below), whose sum is σ = 2241608791680. Its totient is φ = 1793287032768.

The previous prime is 2011221221081. The next prime is 2011221221173. The reversal of 2011221221101 is 1011221221102.

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 2011221221101 - 2²⁵ = 2011187666669 is a prime.

It is a super-3 number, since 3×2011221221101³ (a number of 38 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011221221201) 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, 3113345221 + ... + 3113345866.

It is an arithmetic number, because the mean of its divisors is an integer number (280201098960).

Almost surely, 2^{2011221221101} is an apocalyptic number.

It is an amenable number.

2011221221101 is a deficient number, since it is larger than the sum of its proper divisors (230387570579).

2011221221101 is a wasteful number, since it uses less digits than its factorization.

2011221221101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6226691123.

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

Adding to 2011221221101 its reverse (1011221221102), we get a palindrome (3022442442203).

Subtracting from 2011221221101 its reverse (1011221221102), we obtain a palindrome (999999999999).

It can be divided in two parts, 2011221 and 221101, that added together give a palindrome (2232322).

The spelling of 2011221221101 in words is "two trillion, eleven billion, two hundred twenty-one million, two hundred twenty-one thousand, one hundred one".