21222030113044 has 24 divisors (see below), whose sum is σ = 39384520130088. Its totient is φ = 9971257589760.

The previous prime is 21222030113003. The next prime is 21222030113047. The reversal of 21222030113044 is 44031103022212.

It can be written as a sum of positive squares in 4 ways, for example, as 7231527722500 + 13990502390544 = 2689150^2 + 3740388^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21222030113047) 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, 243395319 + ... + 243482494.

It is an arithmetic number, because the mean of its divisors is an integer number (1641021672087).

Almost surely, 2^{21222030113044} is an apocalyptic number.

It is an amenable number.

21222030113044 is a deficient number, since it is larger than the sum of its proper divisors (18162490017044).

21222030113044 is a wasteful number, since it uses less digits than its factorization.

21222030113044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486878475 (or 486878473 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 21222030113044 its reverse (44031103022212), we get a palindrome (65253133135256).

The spelling of 21222030113044 in words is "twenty-one trillion, two hundred twenty-two billion, thirty million, one hundred thirteen thousand, forty-four".