1222122011111 has 8 divisors (see below), whose sum is σ = 1265524950144. Its totient is φ = 1178967800160.

The previous prime is 1222122011081. The next prime is 1222122011113. The reversal of 1222122011111 is 1111102212221.

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

It is a de Polignac number, because none of the positive numbers 2^k-1222122011111 is a prime.

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 1222122011111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222122011113) 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, 62172020 + ... + 62191673.

It is an arithmetic number, because the mean of its divisors is an integer number (158190618768).

Almost surely, 2^{1222122011111} is an apocalyptic number.

1222122011111 is a deficient number, since it is larger than the sum of its proper divisors (43402939033).

1222122011111 is a wasteful number, since it uses less digits than its factorization.

1222122011111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124364041.

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

Adding to 1222122011111 its reverse (1111102212221), we get a palindrome (2333224223332).

The spelling of 1222122011111 in words is "one trillion, two hundred twenty-two billion, one hundred twenty-two million, eleven thousand, one hundred eleven".