20144122211 has 4 divisors (see below), whose sum is σ = 20351793672. Its totient is φ = 19936450752.

The previous prime is 20144122169. The next prime is 20144122241. The reversal of 20144122211 is 11222144102.

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 20144122211 - 2⁶ = 20144122147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20144122241) 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, 103835585 + ... + 103835778.

It is an arithmetic number, because the mean of its divisors is an integer number (5087948418).

Almost surely, 2^20144122211 is an apocalyptic number.

20144122211 is a deficient number, since it is larger than the sum of its proper divisors (207671461).

20144122211 is an equidigital number, since it uses as much as digits as its factorization.

20144122211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207671460.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 20144122211 its reverse (11222144102), we get a palindrome (31366266313).

The spelling of 20144122211 in words is "twenty billion, one hundred forty-four million, one hundred twenty-two thousand, two hundred eleven".