221440100020422 has 64 divisors (see below), whose sum is σ = 467236755648000. Its totient is φ = 69771511842048.

The previous prime is 221440100020417. The next prime is 221440100020429. The reversal of 221440100020422 is 224020001044122.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 221440100020392 and 221440100020401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221440100020429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 132338479 + ... + 134001317.

It is an arithmetic number, because the mean of its divisors is an integer number (7300574307000).

Almost surely, 2^{221440100020422} is an apocalyptic number.

221440100020422 is an abundant number, since it is smaller than the sum of its proper divisors (245796655627578).

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

221440100020422 is a wasteful number, since it uses less digits than its factorization.

221440100020422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1665485.

The product of its (nonzero) digits is 2048, while the sum is 24.

Adding to 221440100020422 its reverse (224020001044122), we get a palindrome (445460101064544).

The spelling of 221440100020422 in words is "two hundred twenty-one trillion, four hundred forty billion, one hundred million, twenty thousand, four hundred twenty-two".