111212121120222 has 32 divisors (see below), whose sum is σ = 225678381963264. Its totient is φ = 36531978224000.

The previous prime is 111212121120209. The next prime is 111212121120223. The reversal of 111212121120222 is 222021121212111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111212121120223) 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, 453352779 + ... + 453598022.

It is an arithmetic number, because the mean of its divisors is an integer number (7052449436352).

Almost surely, 2^{111212121120222} is an apocalyptic number.

111212121120222 is an abundant number, since it is smaller than the sum of its proper divisors (114466260843042).

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

111212121120222 is a wasteful number, since it uses less digits than its factorization.

111212121120222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 906951104.

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 111212121120222 its reverse (222021121212111), we get a palindrome (333233242332333).

The spelling of 111212121120222 in words is "one hundred eleven trillion, two hundred twelve billion, one hundred twenty-one million, one hundred twenty thousand, two hundred twenty-two".