2211111011021 has 8 divisors (see below), whose sum is σ = 2412419471424. Its totient is φ = 2009852278720.

The previous prime is 2211111011009. The next prime is 2211111011077. The reversal of 2211111011021 is 1201101111122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2211111011021 - 2³⁰ = 2210037269197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2211111010987 and 2211111011005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211111011621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12339020 + ... + 12516933.

It is an arithmetic number, because the mean of its divisors is an integer number (301552433928).

Almost surely, 2^{2211111011021} is an apocalyptic number.

It is an amenable number.

2211111011021 is a deficient number, since it is larger than the sum of its proper divisors (201308460403).

2211111011021 is a wasteful number, since it uses less digits than its factorization.

2211111011021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24864051.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 2211111011021 its reverse (1201101111122), we get a palindrome (3412212122143).

The spelling of 2211111011021 in words is "two trillion, two hundred eleven billion, one hundred eleven million, eleven thousand, twenty-one".