20213233311 has 16 divisors (see below), whose sum is σ = 28058563424. Its totient is φ = 12931674624.

The previous prime is 20213233301. The next prime is 20213233319. The reversal of 20213233311 is 11333231202.

It is not a de Polignac number, because 20213233311 - 2¹⁰ = 20213232287 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20213233319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1239166 + ... + 1255371.

It is an arithmetic number, because the mean of its divisors is an integer number (1753660214).

Almost surely, 2^20213233311 is an apocalyptic number.

20213233311 is a deficient number, since it is larger than the sum of its proper divisors (7845330113).

20213233311 is a wasteful number, since it uses less digits than its factorization.

20213233311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2494650.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 20213233311 its reverse (11333231202), we get a palindrome (31546464513).

The spelling of 20213233311 in words is "twenty billion, two hundred thirteen million, two hundred thirty-three thousand, three hundred eleven".