1200222111111 has 8 divisors (see below), whose sum is σ = 1600793610864. Its totient is φ = 799899342720.

The previous prime is 1200222111089. The next prime is 1200222111131. The reversal of 1200222111111 is 1111112220021.

It is a happy number.

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

It is not a de Polignac number, because 1200222111111 - 2¹⁷ = 1200221980039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200222111131) 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, 62171580 + ... + 62190881.

It is an arithmetic number, because the mean of its divisors is an integer number (200099201358).

Almost surely, 2^{1200222111111} is an apocalyptic number.

1200222111111 is a deficient number, since it is larger than the sum of its proper divisors (400571499753).

1200222111111 is a wasteful number, since it uses less digits than its factorization.

1200222111111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124365681.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1200222111111 its reverse (1111112220021), we get a palindrome (2311334331132).

The spelling of 1200222111111 in words is "one trillion, two hundred billion, two hundred twenty-two million, one hundred eleven thousand, one hundred eleven".