221122012002010 has 24 divisors (see below), whose sum is σ = 463002416968500. Its totient is φ = 75813261257664.

The previous prime is 221122012001987. The next prime is 221122012002019. The reversal of 221122012002010 is 10200210221122.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 185328008471529 + 35794003530481 = 13613523^2 + 5982809^2 .

It is not an unprimeable number, because it can be changed into a prime (221122012002019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 225634705635 + ... + 225634706614.

Almost surely, 2^{221122012002010} is an apocalyptic number.

221122012002010 is an abundant number, since it is smaller than the sum of its proper divisors (241880404966490).

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

221122012002010 is a wasteful number, since it uses less digits than its factorization.

221122012002010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451269412270 (or 451269412263 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 221122012002010 its reverse (10200210221122), we get a palindrome (231322222223132).

The spelling of 221122012002010 in words is "two hundred twenty-one trillion, one hundred twenty-two billion, twelve million, two thousand, ten".