2221100212021 has 4 divisors (see below), whose sum is σ = 2338000223200. Its totient is φ = 2104200200844.

The previous prime is 2221100211937. The next prime is 2221100212099. The reversal of 2221100212021 is 1202120011222.

It is a happy number.

2221100212021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2221100212021 - 2⁷ = 2221100211893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2221100211986 and 2221100212004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221100213021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58450005561 + ... + 58450005598.

It is an arithmetic number, because the mean of its divisors is an integer number (584500055800).

Almost surely, 2^{2221100212021} is an apocalyptic number.

It is an amenable number.

2221100212021 is a deficient number, since it is larger than the sum of its proper divisors (116900011179).

2221100212021 is a wasteful number, since it uses less digits than its factorization.

2221100212021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116900011178.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2221100212021 its reverse (1202120011222), we get a palindrome (3423220223243).

The spelling of 2221100212021 in words is "two trillion, two hundred twenty-one billion, one hundred million, two hundred twelve thousand, twenty-one".