20211100311 has 16 divisors (see below), whose sum is σ = 27260417504. Its totient is φ = 13318815744.

The previous prime is 20211100309. The next prime is 20211100319. The reversal of 20211100311 is 11300111202.

It is not a de Polignac number, because 20211100311 - 2¹ = 20211100309 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 (20211100319) 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 15 ways as a sum of consecutive naturals, for example, 20266 + ... + 202071.

It is an arithmetic number, because the mean of its divisors is an integer number (1703776094).

Almost surely, 2^20211100311 is an apocalyptic number.

20211100311 is a deficient number, since it is larger than the sum of its proper divisors (7049317193).

20211100311 is a wasteful number, since it uses less digits than its factorization.

20211100311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222690.

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 20211100311 its reverse (11300111202), we get a palindrome (31511211513).

The spelling of 20211100311 in words is "twenty billion, two hundred eleven million, one hundred thousand, three hundred eleven".