20202209999 has 8 divisors (see below), whose sum is σ = 21193189920. Its totient is φ = 19230853600.

The previous prime is 20202209927. The next prime is 20202210037. The reversal of 20202209999 is 99990220202.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20202209999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20202209399) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4903772 + ... + 4907889.

It is an arithmetic number, because the mean of its divisors is an integer number (2649148740).

Almost surely, 2^20202209999 is an apocalyptic number.

20202209999 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

20202209999 is a deficient number, since it is larger than the sum of its proper divisors (990979921).

20202209999 is an equidigital number, since it uses as much as digits as its factorization.

20202209999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9811761.

The product of its (nonzero) digits is 104976, while the sum is 44.

The spelling of 20202209999 in words is "twenty billion, two hundred two million, two hundred nine thousand, nine hundred ninety-nine".