11101001011221 has 8 divisors (see below), whose sum is σ = 16146910561824. Its totient is φ = 6727879400720.

The previous prime is 11101001011183. The next prime is 11101001011253. The reversal of 11101001011221 is 12211010010111.

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 11101001011221 - 2¹¹ = 11101001009173 is a prime.

It is a super-2 number, since 2×11101001011221² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11101001011197 and 11101001011206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11101001011291) 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, 168196984986 + ... + 168196985051.

It is an arithmetic number, because the mean of its divisors is an integer number (2018363820228).

Almost surely, 2^{11101001011221} is an apocalyptic number.

11101001011221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11101001011221 is a deficient number, since it is larger than the sum of its proper divisors (5045909550603).

11101001011221 is a wasteful number, since it uses less digits than its factorization.

11101001011221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336393970051.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 11101001011221 its reverse (12211010010111), we get a palindrome (23312011021332).

The spelling of 11101001011221 in words is "eleven trillion, one hundred one billion, one million, eleven thousand, two hundred twenty-one".