2211234304021 has 4 divisors (see below), whose sum is σ = 2241525184972. Its totient is φ = 2180943423072.

The previous prime is 2211234304003. The next prime is 2211234304043. The reversal of 2211234304021 is 1204034321122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1444359294225 + 766875009796 = 1201815^2 + 875714^2 .

It is a cyclic number.

It is not a de Polignac number, because 2211234304021 - 2¹¹ = 2211234301973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211234304421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15145440366 + ... + 15145440511.

It is an arithmetic number, because the mean of its divisors is an integer number (560381296243).

Almost surely, 2^{2211234304021} is an apocalyptic number.

It is an amenable number.

2211234304021 is a deficient number, since it is larger than the sum of its proper divisors (30290880951).

2211234304021 is an equidigital number, since it uses as much as digits as its factorization.

2211234304021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30290880950.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 2211234304021 its reverse (1204034321122), we get a palindrome (3415268625143).

The spelling of 2211234304021 in words is "two trillion, two hundred eleven billion, two hundred thirty-four million, three hundred four thousand, twenty-one".