221150235522 has 16 divisors (see below), whose sum is σ = 442440168192. Its totient is φ = 73693462320.

The previous prime is 221150235497. The next prime is 221150235557. The reversal of 221150235522 is 225532051122.

It is a super-2 number, since 2×221150235522² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 221150235522.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5800129 + ... + 5838132.

It is an arithmetic number, because the mean of its divisors is an integer number (27652510512).

Almost surely, 2^221150235522 is an apocalyptic number.

221150235522 is an abundant number, since it is smaller than the sum of its proper divisors (221289932670).

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

221150235522 is a wasteful number, since it uses less digits than its factorization.

221150235522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11641433.

The product of its (nonzero) digits is 12000, while the sum is 30.

Adding to 221150235522 its reverse (225532051122), we get a palindrome (446682286644).

The spelling of 221150235522 in words is "two hundred twenty-one billion, one hundred fifty million, two hundred thirty-five thousand, five hundred twenty-two".