111211210210222 has 4 divisors (see below), whose sum is σ = 166816815315336. Its totient is φ = 55605605105110.

The previous prime is 111211210210211. The next prime is 111211210210229. The reversal of 111211210210222 is 222012012112111.

It is a happy number.

111211210210222 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 111211210210222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111211210210229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27802802552554 + ... + 27802802552557.

It is an arithmetic number, because the mean of its divisors is an integer number (41704203828834).

Almost surely, 2^{111211210210222} is an apocalyptic number.

111211210210222 is a deficient number, since it is larger than the sum of its proper divisors (55605605105114).

111211210210222 is an equidigital number, since it uses as much as digits as its factorization.

111211210210222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55605605105113.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 111211210210222 its reverse (222012012112111), we get a palindrome (333223222322333).

The spelling of 111211210210222 in words is "one hundred eleven trillion, two hundred eleven billion, two hundred ten million, two hundred ten thousand, two hundred twenty-two".