221222120122010 has 96 divisors (see below), whose sum is σ = 488216369582208. Its totient is φ = 70679169100800.

The previous prime is 221222120122001. The next prime is 221222120122037. The reversal of 221222120122010 is 10221021222122.

221222120122010 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 52092164 + ... + 56178623.

It is an arithmetic number, because the mean of its divisors is an integer number (5085587183148).

Almost surely, 2^{221222120122010} is an apocalyptic number.

221222120122010 is an abundant number, since it is smaller than the sum of its proper divisors (266994249460198).

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

221222120122010 is a wasteful number, since it uses less digits than its factorization.

221222120122010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108270936 (or 108270919 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 221222120122010 its reverse (10221021222122), we get a palindrome (231443141344132).

The spelling of 221222120122010 in words is "two hundred twenty-one trillion, two hundred twenty-two billion, one hundred twenty million, one hundred twenty-two thousand, ten".