222244042213521 has 16 divisors (see below), whose sum is σ = 329253302720320. Its totient is φ = 148161403393920.

The previous prime is 222244042213513. The next prime is 222244042213547. The reversal of 222244042213521 is 125312240442222.

222244042213521 is a `hidden beast` number, since 2 + 2 + 2 + 2 + 4 + 404 + 221 + 3 + 5 + 21 = 666.

It is not a de Polignac number, because 222244042213521 - 2³ = 222244042213513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222244042213561) 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 15 ways as a sum of consecutive naturals, for example, 32712535 + ... + 38917836.

It is an arithmetic number, because the mean of its divisors is an integer number (20578331420020).

Almost surely, 2^{222244042213521} is an apocalyptic number.

It is an amenable number.

222244042213521 is a deficient number, since it is larger than the sum of its proper divisors (107009260506799).

222244042213521 is a wasteful number, since it uses less digits than its factorization.

222244042213521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71745293 (or 71745287 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 36.

Adding to 222244042213521 its reverse (125312240442222), we get a palindrome (347556282655743).

The spelling of 222244042213521 in words is "two hundred twenty-two trillion, two hundred forty-four billion, forty-two million, two hundred thirteen thousand, five hundred twenty-one".