1121112021111 has 32 divisors (see below), whose sum is σ = 1509192235008. Its totient is φ = 740256654720.

The previous prime is 1121112021109. The next prime is 1121112021149. The reversal of 1121112021111 is 1111202111211.

It is not a de Polignac number, because 1121112021111 - 2¹ = 1121112021109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121112021181) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 379136845 + ... + 379139801.

It is an arithmetic number, because the mean of its divisors is an integer number (47162257344).

Almost surely, 2^{1121112021111} is an apocalyptic number.

1121112021111 is a deficient number, since it is larger than the sum of its proper divisors (388080213897).

1121112021111 is a wasteful number, since it uses less digits than its factorization.

1121112021111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5671.

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

Adding to 1121112021111 its reverse (1111202111211), we get a palindrome (2232314132322).

The spelling of 1121112021111 in words is "one trillion, one hundred twenty-one billion, one hundred twelve million, twenty-one thousand, one hundred eleven".