1111212221222 has 8 divisors (see below), whose sum is σ = 1682396073576. Its totient is φ = 550413530032.

The previous prime is 1111212221219. The next prime is 1111212221261. The reversal of 1111212221222 is 2221222121111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1111212221194 and 1111212221203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2596290023 + ... + 2596290450.

It is an arithmetic number, because the mean of its divisors is an integer number (210299509197).

Almost surely, 2^{1111212221222} is an apocalyptic number.

1111212221222 is a deficient number, since it is larger than the sum of its proper divisors (571183852354).

1111212221222 is a wasteful number, since it uses less digits than its factorization.

1111212221222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5192580582.

The product of its digits is 128, while the sum is 20.

Adding to 1111212221222 its reverse (2221222121111), we get a palindrome (3332434342333).

The spelling of 1111212221222 in words is "one trillion, one hundred eleven billion, two hundred twelve million, two hundred twenty-one thousand, two hundred twenty-two".