21213303099 has 16 divisors (see below), whose sum is σ = 28403370240. Its totient is φ = 14082821280.

The previous prime is 21213303091. The next prime is 21213303113. The reversal of 21213303099 is 99030331212.

It is not a de Polignac number, because 21213303099 - 2³ = 21213303091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21213303091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 858682 + ... + 883040.

It is an arithmetic number, because the mean of its divisors is an integer number (1775210640).

Almost surely, 2^21213303099 is an apocalyptic number.

21213303099 is a deficient number, since it is larger than the sum of its proper divisors (7190067141).

21213303099 is a wasteful number, since it uses less digits than its factorization.

21213303099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25570.

The product of its (nonzero) digits is 8748, while the sum is 33.

The spelling of 21213303099 in words is "twenty-one billion, two hundred thirteen million, three hundred three thousand, ninety-nine".