221222202010120 has 32 divisors (see below), whose sum is σ = 497860247407320. Its totient is φ = 88469273180160.

The previous prime is 221222202010091. The next prime is 221222202010153. The reversal of 221222202010120 is 21010202222122.

It can be written as a sum of positive squares in 4 ways, for example, as 161219548095076 + 60002653915044 = 12697226^2 + 7746138^2 .

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, 612555471 + ... + 612916510.

Almost surely, 2^{221222202010120} is an apocalyptic number.

221222202010120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221222202010120 is an abundant number, since it is smaller than the sum of its proper divisors (276638045397200).

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

221222202010120 is a wasteful number, since it uses less digits than its factorization.

221222202010120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1225476505 (or 1225476501 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 221222202010120 its reverse (21010202222122), we get a palindrome (242232404232242).

The spelling of 221222202010120 in words is "two hundred twenty-one trillion, two hundred twenty-two billion, two hundred two million, ten thousand, one hundred twenty".