1200022120111 has 8 divisors (see below), whose sum is σ = 1212576148784. Its totient is φ = 1187471819520.

The previous prime is 1200022120061. The next prime is 1200022120127. The reversal of 1200022120111 is 1110212200021.

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 1200022120111 - 2¹¹ = 1200022118063 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1200022120091 and 1200022120100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200022120711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 282525 + ... + 1574758.

It is an arithmetic number, because the mean of its divisors is an integer number (151572018598).

Almost surely, 2^{1200022120111} is an apocalyptic number.

1200022120111 is a deficient number, since it is larger than the sum of its proper divisors (12554028673).

1200022120111 is an equidigital number, since it uses as much as digits as its factorization.

1200022120111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1864041.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1200022120111 its reverse (1110212200021), we get a palindrome (2310234320132).

The spelling of 1200022120111 in words is "one trillion, two hundred billion, twenty-two million, one hundred twenty thousand, one hundred eleven".