11211120220021 has 8 divisors (see below), whose sum is σ = 11472157376064. Its totient is φ = 10950097310880.

The previous prime is 11211120220019. The next prime is 11211120220033. The reversal of 11211120220021 is 12002202111211.

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 11211120220021 - 2¹ = 11211120220019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11211120219977 and 11211120220004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11211120220621) 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 7 ways as a sum of consecutive naturals, for example, 1961296 + ... + 5125321.

It is an arithmetic number, because the mean of its divisors is an integer number (1434019672008).

Almost surely, 2^{11211120220021} is an apocalyptic number.

It is an amenable number.

11211120220021 is a deficient number, since it is larger than the sum of its proper divisors (261037156043).

11211120220021 is an equidigital number, since it uses as much as digits as its factorization.

11211120220021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7123451.

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

Adding to 11211120220021 its reverse (12002202111211), we get a palindrome (23213322331232).

The spelling of 11211120220021 in words is "eleven trillion, two hundred eleven billion, one hundred twenty million, two hundred twenty thousand, twenty-one".