222741522 has 64 divisors (see below), whose sum is σ = 543744000. Its totient is φ = 67274064.

The previous prime is 222741521. The next prime is 222741529. The reversal of 222741522 is 225147222.

222741522 is a `hidden beast` number, since 2 + 227 + 415 + 22 = 666.

It is a super-2 number, since 2×222741522² = 99227571245752968, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (222741521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18879 + ... + 28317.

It is an arithmetic number, because the mean of its divisors is an integer number (8496000).

Almost surely, 2^222741522 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222741522, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (271872000).

222741522 is an abundant number, since it is smaller than the sum of its proper divisors (321002478).

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

222741522 is a wasteful number, since it uses less digits than its factorization.

222741522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9492 (or 9486 counting only the distinct ones).

The product of its digits is 4480, while the sum is 27.

The square root of 222741522 is about 14924.5275302101. The cubic root of 222741522 is about 606.1783123935.

Adding to 222741522 its reverse (225147222), we get a palindrome (447888744).

The spelling of 222741522 in words is "two hundred twenty-two million, seven hundred forty-one thousand, five hundred twenty-two".