221222101112210 has 128 divisors (see below), whose sum is σ = 477158008688640. Its totient is φ = 72894830342400.

The previous prime is 221222101112197. The next prime is 221222101112227. The reversal of 221222101112210 is 12211101222122.

It is a super-2 number, since 2×221222101112210² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3029863664 + ... + 3029936676.

It is an arithmetic number, because the mean of its divisors is an integer number (3727796942880).

Almost surely, 2^{221222101112210} is an apocalyptic number.

221222101112210 is an abundant number, since it is smaller than the sum of its proper divisors (255935907576430).

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

221222101112210 is a wasteful number, since it uses less digits than its factorization.

221222101112210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136104.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 221222101112210 its reverse (12211101222122), we get a palindrome (233433202334332).

The spelling of 221222101112210 in words is "two hundred twenty-one trillion, two hundred twenty-two billion, one hundred one million, one hundred twelve thousand, two hundred ten".