222220644541 has 4 divisors (see below), whose sum is σ = 253966450912. Its totient is φ = 190474838172.

The previous prime is 222220644521. The next prime is 222220644571. The reversal of 222220644541 is 145446022222.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 222220644541 - 2⁷ = 222220644413 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222220644497 and 222220644506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222220644521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15872903175 + ... + 15872903188.

It is an arithmetic number, because the mean of its divisors is an integer number (63491612728).

Almost surely, 2^222220644541 is an apocalyptic number.

It is an amenable number.

222220644541 is a deficient number, since it is larger than the sum of its proper divisors (31745806371).

222220644541 is an equidigital number, since it uses as much as digits as its factorization.

222220644541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31745806370.

The product of its (nonzero) digits is 61440, while the sum is 34.

Adding to 222220644541 its reverse (145446022222), we get a palindrome (367666666763).

It can be divided in two parts, 222220 and 644541, that added together give a square (866761 = 931²).

The spelling of 222220644541 in words is "two hundred twenty-two billion, two hundred twenty million, six hundred forty-four thousand, five hundred forty-one".