1122121101111 has 8 divisors (see below), whose sum is σ = 1496170685184. Its totient is φ = 748076125560.

The previous prime is 1122121101077. The next prime is 1122121101113. The reversal of 1122121101111 is 1111011212211.

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

It is not a de Polignac number, because 1122121101111 - 2⁹ = 1122121100599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122121101113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 537085 + ... + 1591446.

It is an arithmetic number, because the mean of its divisors is an integer number (187021335648).

Almost surely, 2^{1122121101111} is an apocalyptic number.

1122121101111 is a deficient number, since it is larger than the sum of its proper divisors (374049584073).

1122121101111 is a wasteful number, since it uses less digits than its factorization.

1122121101111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2304261.

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

Adding to 1122121101111 its reverse (1111011212211), we get a palindrome (2233132313322).

The spelling of 1122121101111 in words is "one trillion, one hundred twenty-two billion, one hundred twenty-one million, one hundred one thousand, one hundred eleven".