21113002041 has 4 divisors (see below), whose sum is σ = 28150669392. Its totient is φ = 14075334692.

The previous prime is 21113001991. The next prime is 21113002091. The reversal of 21113002041 is 14020031112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (21113001991) and next prime (21113002091).

It is a cyclic number.

It is not a de Polignac number, because 21113002041 - 2²² = 21108807737 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21113002041.

It is not an unprimeable number, because it can be changed into a prime (21113002091) 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, 3518833671 + ... + 3518833676.

It is an arithmetic number, because the mean of its divisors is an integer number (7037667348).

Almost surely, 2^21113002041 is an apocalyptic number.

It is an amenable number.

21113002041 is a deficient number, since it is larger than the sum of its proper divisors (7037667351).

21113002041 is an equidigital number, since it uses as much as digits as its factorization.

21113002041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7037667350.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 21113002041 its reverse (14020031112), we get a palindrome (35133033153).

The spelling of 21113002041 in words is "twenty-one billion, one hundred thirteen million, two thousand, forty-one".