21144224311122 has 16 divisors (see below), whose sum is σ = 46132853042592. Its totient is φ = 6407340700320.

The previous prime is 21144224311121. The next prime is 21144224311181. The reversal of 21144224311122 is 22111342244112.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 21144224311122.

It is not an unprimeable number, because it can be changed into a prime (21144224311121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 160183517443 + ... + 160183517574.

It is an arithmetic number, because the mean of its divisors is an integer number (2883303315162).

Almost surely, 2^{21144224311122} is an apocalyptic number.

21144224311122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21144224311122 is an abundant number, since it is smaller than the sum of its proper divisors (24988628731470).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21144224311122 is a wasteful number, since it uses less digits than its factorization.

21144224311122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320367035033.

The product of its digits is 6144, while the sum is 30.

Adding to 21144224311122 its reverse (22111342244112), we get a palindrome (43255566555234).

The spelling of 21144224311122 in words is "twenty-one trillion, one hundred forty-four billion, two hundred twenty-four million, three hundred eleven thousand, one hundred twenty-two".