20223312011 has 4 divisors (see below), whose sum is σ = 23112356592. Its totient is φ = 17334267432.

The previous prime is 20223312007. The next prime is 20223312061. The reversal of 20223312011 is 11021332202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20223312011 - 2² = 20223312007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20223312061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1444522280 + ... + 1444522293.

It is an arithmetic number, because the mean of its divisors is an integer number (5778089148).

Almost surely, 2^20223312011 is an apocalyptic number.

20223312011 is a deficient number, since it is larger than the sum of its proper divisors (2889044581).

20223312011 is an equidigital number, since it uses as much as digits as its factorization.

20223312011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2889044580.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 20223312011 its reverse (11021332202), we get a palindrome (31244644213).

The spelling of 20223312011 in words is "twenty billion, two hundred twenty-three million, three hundred twelve thousand, eleven".