2421111422021 has 2 divisors, whose sum is σ = 2421111422022. Its totient is φ = 2421111422020.

The previous prime is 2421111421973. The next prime is 2421111422083. The reversal of 2421111422021 is 1202241111242.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2286404071396 + 134707350625 = 1512086^2 + 367025^2 .

It is a cyclic number.

It is not a de Polignac number, because 2421111422021 - 2¹⁰ = 2421111420997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2421111422921) 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 as a sum of consecutive naturals, namely, 1210555711010 + 1210555711011.

It is an arithmetic number, because the mean of its divisors is an integer number (1210555711011).

Almost surely, 2^{2421111422021} is an apocalyptic number.

It is an amenable number.

2421111422021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2421111422021 is an equidigital number, since it uses as much as digits as its factorization.

2421111422021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 512, while the sum is 23.

Adding to 2421111422021 its reverse (1202241111242), we get a palindrome (3623352533263).

The spelling of 2421111422021 in words is "two trillion, four hundred twenty-one billion, one hundred eleven million, four hundred twenty-two thousand, twenty-one".