111222122220210 has 16 divisors (see below), whose sum is σ = 266933093328576. Its totient is φ = 29659232592048.

The previous prime is 111222122220199. The next prime is 111222122220263. The reversal of 111222122220210 is 12022221222111.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1853702036974 + ... + 1853702037033.

It is an arithmetic number, because the mean of its divisors is an integer number (16683318333036).

Almost surely, 2^{111222122220210} is an apocalyptic number.

111222122220210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111222122220210 is an abundant number, since it is smaller than the sum of its proper divisors (155710971108366).

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

111222122220210 is a wasteful number, since it uses less digits than its factorization.

111222122220210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3707404074017.

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

Adding to 111222122220210 its reverse (12022221222111), we get a palindrome (123244343442321).

The spelling of 111222122220210 in words is "one hundred eleven trillion, two hundred twenty-two billion, one hundred twenty-two million, two hundred twenty thousand, two hundred ten".