21210222020099 has 8 divisors (see below), whose sum is σ = 24388966951680. Its totient is φ = 18068655392136.

The previous prime is 21210222020083. The next prime is 21210222020101. The reversal of 21210222020099 is 99002022201212.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21210222020099 - 2⁴ = 21210222020083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21210222020899) 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 in 7 ways as a sum of consecutive naturals, for example, 9294574679 + ... + 9294576960.

It is an arithmetic number, because the mean of its divisors is an integer number (3048620868960).

Almost surely, 2^{21210222020099} is an apocalyptic number.

21210222020099 is a deficient number, since it is larger than the sum of its proper divisors (3178744931581).

21210222020099 is a wasteful number, since it uses less digits than its factorization.

21210222020099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18589151809.

The product of its (nonzero) digits is 5184, while the sum is 32.

The spelling of 21210222020099 in words is "twenty-one trillion, two hundred ten billion, two hundred twenty-two million, twenty thousand, ninety-nine".