20211101999 has 8 divisors (see below), whose sum is σ = 22314120192. Its totient is φ = 18152358040.

The previous prime is 20211101947. The next prime is 20211102011. The reversal of 20211101999 is 99910111202.

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 20211101999 - 2¹⁶ = 20211036463 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 (20211101909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11067599 + ... + 11069424.

It is an arithmetic number, because the mean of its divisors is an integer number (2789265024).

Almost surely, 2^20211101999 is an apocalyptic number.

20211101999 is a deficient number, since it is larger than the sum of its proper divisors (2103018193).

20211101999 is a wasteful number, since it uses less digits than its factorization.

20211101999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22137117.

The product of its (nonzero) digits is 2916, while the sum is 35.

The spelling of 20211101999 in words is "twenty billion, two hundred eleven million, one hundred one thousand, nine hundred ninety-nine".