1222110221111 has 8 divisors (see below), whose sum is σ = 1317370968144. Its totient is φ = 1127028369600.

The previous prime is 1222110221081. The next prime is 1222110221113. The reversal of 1222110221111 is 1111220112221.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1222110221111 is a prime.

It is a super-4 number, since 4×1222110221111⁴ (a number of 49 digits) contains 4444 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1222110221111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222110221113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44709686 + ... + 44737011.

It is an arithmetic number, because the mean of its divisors is an integer number (164671371018).

Almost surely, 2^{1222110221111} is an apocalyptic number.

1222110221111 is a deficient number, since it is larger than the sum of its proper divisors (95260747033).

1222110221111 is a wasteful number, since it uses less digits than its factorization.

1222110221111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89447761.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 1222110221111 its reverse (1111220112221), we get a palindrome (2333330333332).

The spelling of 1222110221111 in words is "one trillion, two hundred twenty-two billion, one hundred ten million, two hundred twenty-one thousand, one hundred eleven".