211101221220222 has 32 divisors (see below), whose sum is σ = 450049239129600. Its totient is φ = 65819701217088.

The previous prime is 211101221220199. The next prime is 211101221220223. The reversal of 211101221220222 is 222022122101112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211101221220223) 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, 11720023263 + ... + 11720041274.

It is an arithmetic number, because the mean of its divisors is an integer number (14064038722800).

Almost surely, 2^{211101221220222} is an apocalyptic number.

211101221220222 is an abundant number, since it is smaller than the sum of its proper divisors (238948017909378).

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

211101221220222 is a wasteful number, since it uses less digits than its factorization.

211101221220222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23440064640.

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

Adding to 211101221220222 its reverse (222022122101112), we get a palindrome (433123343321334).

The spelling of 211101221220222 in words is "two hundred eleven trillion, one hundred one billion, two hundred twenty-one million, two hundred twenty thousand, two hundred twenty-two".