111212111101222 has 16 divisors (see below), whose sum is σ = 174163770858240. Its totient is φ = 53160094160712.

The previous prime is 111212111101207. The next prime is 111212111101307. The reversal of 111212111101222 is 222101111212111.

It is a self number, because there is not a number n which added to its sum of digits gives 111212111101222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 643249008 + ... + 643421875.

It is an arithmetic number, because the mean of its divisors is an integer number (10885235678640).

Almost surely, 2^{111212111101222} is an apocalyptic number.

111212111101222 is a deficient number, since it is larger than the sum of its proper divisors (62951659757018).

111212111101222 is a wasteful number, since it uses less digits than its factorization.

111212111101222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1286672787.

The product of its (nonzero) digits is 32, while the sum is 19.

Adding to 111212111101222 its reverse (222101111212111), we get a palindrome (333313222313333).

The spelling of 111212111101222 in words is "one hundred eleven trillion, two hundred twelve billion, one hundred eleven million, one hundred one thousand, two hundred twenty-two".