221422131343044 has 144 divisors (see below), whose sum is σ = 631685864779200. Its totient is φ = 66882657194496.

The previous prime is 221422131342977. The next prime is 221422131343051. The reversal of 221422131343044 is 440343131224122.

221422131343044 is a `hidden beast` number, since 2 + 2 + 1 + 4 + 2 + 213 + 1 + 3 + 430 + 4 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 100904589 + ... + 103075604.

It is an arithmetic number, because the mean of its divisors is an integer number (4386707394300).

Almost surely, 2^{221422131343044} is an apocalyptic number.

It is an amenable number.

221422131343044 is an abundant number, since it is smaller than the sum of its proper divisors (410263733436156).

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

221422131343044 is a wasteful number, since it uses less digits than its factorization.

221422131343044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203980271 (or 203980240 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 36.

Adding to 221422131343044 its reverse (440343131224122), we get a palindrome (661765262567166).

The spelling of 221422131343044 in words is "two hundred twenty-one trillion, four hundred twenty-two billion, one hundred thirty-one million, three hundred forty-three thousand, forty-four".