2211444004021 has 16 divisors (see below), whose sum is σ = 2680370338176. Its totient is φ = 1781130548736.

The previous prime is 2211444003971. The next prime is 2211444004141. The reversal of 2211444004021 is 1204004441122.

It is a happy number.

It is not a de Polignac number, because 2211444004021 - 2¹³ = 2211443995829 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 (2211444004321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14986191 + ... + 15133036.

It is an arithmetic number, because the mean of its divisors is an integer number (167523146136).

Almost surely, 2^{2211444004021} is an apocalyptic number.

It is an amenable number.

2211444004021 is a deficient number, since it is larger than the sum of its proper divisors (468926334155).

2211444004021 is a wasteful number, since it uses less digits than its factorization.

2211444004021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30119868.

The product of its (nonzero) digits is 2048, while the sum is 25.

Adding to 2211444004021 its reverse (1204004441122), we get a palindrome (3415448445143).

The spelling of 2211444004021 in words is "two trillion, two hundred eleven billion, four hundred forty-four million, four thousand, twenty-one".