21424104133099 has 4 divisors (see below), whose sum is σ = 21425850343440. Its totient is φ = 21422357922760.

The previous prime is 21424104133087. The next prime is 21424104133111. The reversal of 21424104133099 is 99033140142412.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (21424104133087) and next prime (21424104133111).

It is a cyclic number.

It is not a de Polignac number, because 21424104133099 - 2¹¹ = 21424104131051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21424104133079) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 873086767 + ... + 873111304.

It is an arithmetic number, because the mean of its divisors is an integer number (5356462585860).

Almost surely, 2^{21424104133099} is an apocalyptic number.

21424104133099 is a deficient number, since it is larger than the sum of its proper divisors (1746210341).

21424104133099 is a wasteful number, since it uses less digits than its factorization.

21424104133099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1746210340.

The product of its (nonzero) digits is 186624, while the sum is 43.

The spelling of 21424104133099 in words is "twenty-one trillion, four hundred twenty-four billion, one hundred four million, one hundred thirty-three thousand, ninety-nine".