20930840211 has 8 divisors (see below), whose sum is σ = 29376617920. Its totient is φ = 13219477992.

The previous prime is 20930840201. The next prime is 20930840237. The reversal of 20930840211 is 11204803902.

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

It is not a de Polignac number, because 20930840211 - 2²³ = 20922451603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20930840201) 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, 183603805 + ... + 183603918.

It is an arithmetic number, because the mean of its divisors is an integer number (3672077240).

Almost surely, 2^20930840211 is an apocalyptic number.

20930840211 is a deficient number, since it is larger than the sum of its proper divisors (8445777709).

20930840211 is a wasteful number, since it uses less digits than its factorization.

20930840211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367207745.

The product of its (nonzero) digits is 3456, while the sum is 30.

The spelling of 20930840211 in words is "twenty billion, nine hundred thirty million, eight hundred forty thousand, two hundred eleven".