1122120111111 has 4 divisors (see below), whose sum is σ = 1496160148152. Its totient is φ = 748080074072.

The previous prime is 1122120111059. The next prime is 1122120111121. The reversal of 1122120111111 is 1111110212211.

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 1122120111111 - 2¹⁰ = 1122120110087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122120111121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 187020018516 + ... + 187020018521.

It is an arithmetic number, because the mean of its divisors is an integer number (374040037038).

Almost surely, 2^{1122120111111} is an apocalyptic number.

1122120111111 is a deficient number, since it is larger than the sum of its proper divisors (374040037041).

1122120111111 is an equidigital number, since it uses as much as digits as its factorization.

1122120111111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374040037040.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 1122120111111 its reverse (1111110212211), we get a palindrome (2233230323322).

The spelling of 1122120111111 in words is "one trillion, one hundred twenty-two billion, one hundred twenty million, one hundred eleven thousand, one hundred eleven".