1202111222111 has 4 divisors (see below), whose sum is σ = 1227688056672. Its totient is φ = 1176534387552.

The previous prime is 1202111222077. The next prime is 1202111222149. The reversal of 1202111222111 is 1112221112021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1202111222111 - 2¹⁴ = 1202111205727 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 1202111222111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1202111222911) 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 3 ways as a sum of consecutive naturals, for example, 12788417210 + ... + 12788417303.

It is an arithmetic number, because the mean of its divisors is an integer number (306922014168).

Almost surely, 2^{1202111222111} is an apocalyptic number.

1202111222111 is a deficient number, since it is larger than the sum of its proper divisors (25576834561).

1202111222111 is an equidigital number, since it uses as much as digits as its factorization.

1202111222111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25576834560.

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

Adding to 1202111222111 its reverse (1112221112021), we get a palindrome (2314332334132).

The spelling of 1202111222111 in words is "one trillion, two hundred two billion, one hundred eleven million, two hundred twenty-two thousand, one hundred eleven".