2111402440221 has 8 divisors (see below), whose sum is σ = 2815233815520. Its totient is φ = 1407586345872.

The previous prime is 2111402440181. The next prime is 2111402440267. The reversal of 2111402440221 is 1220442041112.

It is a happy number.

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

It is not a de Polignac number, because 2111402440221 - 2⁹ = 2111402439709 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2111402440191 and 2111402440200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111402440291) 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, 3493851 + ... + 4053368.

It is an arithmetic number, because the mean of its divisors is an integer number (351904226940).

Almost surely, 2^{2111402440221} is an apocalyptic number.

It is an amenable number.

2111402440221 is a deficient number, since it is larger than the sum of its proper divisors (703831375299).

2111402440221 is an equidigital number, since it uses as much as digits as its factorization.

2111402440221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7640475.

The product of its (nonzero) digits is 1024, while the sum is 24.

Adding to 2111402440221 its reverse (1220442041112), we get a palindrome (3331844481333).

The spelling of 2111402440221 in words is "two trillion, one hundred eleven billion, four hundred two million, four hundred forty thousand, two hundred twenty-one".