21002021300099 has 4 divisors (see below), whose sum is σ = 24002310057264. Its totient is φ = 18001732542936.

The previous prime is 21002021300083. The next prime is 21002021300107. The reversal of 21002021300099 is 99000312020012.

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

It is a cyclic number.

It is not a de Polignac number, because 21002021300099 - 2⁴ = 21002021300083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21002021300069) 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, 1500144378572 + ... + 1500144378585.

It is an arithmetic number, because the mean of its divisors is an integer number (6000577514316).

Almost surely, 2^{21002021300099} is an apocalyptic number.

21002021300099 is a deficient number, since it is larger than the sum of its proper divisors (3000288757165).

21002021300099 is an equidigital number, since it uses as much as digits as its factorization.

21002021300099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3000288757164.

The product of its (nonzero) digits is 1944, while the sum is 29.

The spelling of 21002021300099 in words is "twenty-one trillion, two billion, twenty-one million, three hundred thousand, ninety-nine".