222187220549 has 8 divisors (see below), whose sum is σ = 253978014528. Its totient is φ = 190408867200.

The previous prime is 222187220531. The next prime is 222187220561. The reversal of 222187220549 is 945022781222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 222187220549 - 2⁸ = 222187220293 is a prime.

It is a super-2 number, since 2×222187220549² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222187220569) 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 7 ways as a sum of consecutive naturals, for example, 3071852 + ... + 3143349.

It is an arithmetic number, because the mean of its divisors is an integer number (31747251816).

Almost surely, 2^222187220549 is an apocalyptic number.

It is an amenable number.

222187220549 is a deficient number, since it is larger than the sum of its proper divisors (31790793979).

222187220549 is an equidigital number, since it uses as much as digits as its factorization.

222187220549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6220315.

The product of its (nonzero) digits is 322560, while the sum is 44.

The spelling of 222187220549 in words is "two hundred twenty-two billion, one hundred eighty-seven million, two hundred twenty thousand, five hundred forty-nine".