21123441420003 has 96 divisors (see below), whose sum is σ = 35790147993600. Its totient is φ = 11893331907072.

The previous prime is 21123441419989. The next prime is 21123441420007. The reversal of 21123441420003 is 30002414432112.

21123441420003 is a `hidden beast` number, since 2 + 1 + 1 + 234 + 4 + 1 + 420 + 0 + 0 + 3 = 666.

It is not a de Polignac number, because 21123441420003 - 2¹³ = 21123441411811 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21123441420007) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 7265950 + ... + 9748892.

It is an arithmetic number, because the mean of its divisors is an integer number (372814041600).

Almost surely, 2^{21123441420003} is an apocalyptic number.

21123441420003 is a deficient number, since it is larger than the sum of its proper divisors (14666706573597).

21123441420003 is a wasteful number, since it uses less digits than its factorization.

21123441420003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2483113 (or 2483110 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 21123441420003 its reverse (30002414432112), we get a palindrome (51125855852115).

The spelling of 21123441420003 in words is "twenty-one trillion, one hundred twenty-three billion, four hundred forty-one million, four hundred twenty thousand, three".