221201112012222 has 32 divisors (see below), whose sum is σ = 470803680670752. Its totient is φ = 69044161163264.

The previous prime is 221201112012203. The next prime is 221201112012227. The reversal of 221201112012222 is 222210211102122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221201112012227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5504138163 + ... + 5504178350.

It is an arithmetic number, because the mean of its divisors is an integer number (14712615020961).

Almost surely, 2^{221201112012222} is an apocalyptic number.

221201112012222 is an abundant number, since it is smaller than the sum of its proper divisors (249602568658530).

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

221201112012222 is a wasteful number, since it uses less digits than its factorization.

221201112012222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11008316732.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 221201112012222 its reverse (222210211102122), we get a palindrome (443411323114344).

The spelling of 221201112012222 in words is "two hundred twenty-one trillion, two hundred one billion, one hundred twelve million, twelve thousand, two hundred twenty-two".