1201222222111 has 8 divisors (see below), whose sum is σ = 1202534215344. Its totient is φ = 1199910736320.

The previous prime is 1201222222099. The next prime is 1201222222117. The reversal of 1201222222111 is 1112222221021.

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

It is a cyclic number.

It is not a de Polignac number, because 1201222222111 - 2¹⁷ = 1201222091039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201222222117) 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, 4710421 + ... + 4958881.

It is an arithmetic number, because the mean of its divisors is an integer number (150316776918).

Almost surely, 2^{1201222222111} is an apocalyptic number.

1201222222111 is a deficient number, since it is larger than the sum of its proper divisors (1311993233).

1201222222111 is a wasteful number, since it uses less digits than its factorization.

1201222222111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253721.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 1201222222111 its reverse (1112222221021), we get a palindrome (2313444443132).

The spelling of 1201222222111 in words is "one trillion, two hundred one billion, two hundred twenty-two million, two hundred twenty-two thousand, one hundred eleven".