20212444011 has 4 divisors (see below), whose sum is σ = 26949925352. Its totient is φ = 13474962672.

The previous prime is 20212443961. The next prime is 20212444051. The reversal of 20212444011 is 11044421202.

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

It is not a de Polignac number, because 20212444011 - 2⁷ = 20212443883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20212444051) 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, 3368740666 + ... + 3368740671.

It is an arithmetic number, because the mean of its divisors is an integer number (6737481338).

Almost surely, 2^20212444011 is an apocalyptic number.

20212444011 is a deficient number, since it is larger than the sum of its proper divisors (6737481341).

20212444011 is an equidigital number, since it uses as much as digits as its factorization.

20212444011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6737481340.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 20212444011 its reverse (11044421202), we get a palindrome (31256865213).

The spelling of 20212444011 in words is "twenty billion, two hundred twelve million, four hundred forty-four thousand, eleven".