221122771122 has 32 divisors (see below), whose sum is σ = 482466600000. Its totient is φ = 67004550720.

The previous prime is 221122771097. The next prime is 221122771123. The reversal of 221122771122 is 221177221122.

It is a zygodrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 221122771122.

It is not an unprimeable number, because it can be changed into a prime (221122771123) 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 15 ways as a sum of consecutive naturals, for example, 3182004 + ... + 3250752.

It is an arithmetic number, because the mean of its divisors is an integer number (15077081250).

Almost surely, 2^221122771122 is an apocalyptic number.

221122771122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221122771122 is an abundant number, since it is smaller than the sum of its proper divisors (261343828878).

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

221122771122 is a wasteful number, since it uses less digits than its factorization.

221122771122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117498.

The product of its digits is 3136, while the sum is 30.

Adding to 221122771122 its reverse (221177221122), we get a palindrome (442299992244).

The spelling of 221122771122 in words is "two hundred twenty-one billion, one hundred twenty-two million, seven hundred seventy-one thousand, one hundred twenty-two".