222084557221 has 4 divisors (see below), whose sum is σ = 222085514944. Its totient is φ = 222083599500.

The previous prime is 222084557171. The next prime is 222084557269. The reversal of 222084557221 is 122755480222.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 122755480222 = 2 ⋅61377740111.

It is a cyclic number.

It is not a de Polignac number, because 222084557221 - 2²¹ = 222082460069 is a prime.

It is a super-4 number, since 4×222084557221⁴ (a number of 46 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222084557021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111946 + ... + 675796.

It is an arithmetic number, because the mean of its divisors is an integer number (55521378736).

Almost surely, 2^222084557221 is an apocalyptic number.

It is an amenable number.

222084557221 is a deficient number, since it is larger than the sum of its proper divisors (957723).

222084557221 is an equidigital number, since it uses as much as digits as its factorization.

222084557221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 957722.

The product of its (nonzero) digits is 179200, while the sum is 40.

The spelling of 222084557221 in words is "two hundred twenty-two billion, eighty-four million, five hundred fifty-seven thousand, two hundred twenty-one".