1131022111100 has 108 divisors (see below), whose sum is σ = 2856149538480. Its totient is φ = 387625996800.

The previous prime is 1131022111091. The next prime is 1131022111117. The reversal of 1131022111100 is 11112201311.

It is a super-4 number, since 4×1131022111100⁴ (a number of 49 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 12739865 + ... + 12828335.

It is an arithmetic number, because the mean of its divisors is an integer number (26445829060).

Almost surely, 2^{1131022111100} is an apocalyptic number.

1131022111100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1131022111100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1428074769240).

1131022111100 is an abundant number, since it is smaller than the sum of its proper divisors (1725127427380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1131022111100 is a wasteful number, since it uses less digits than its factorization.

1131022111100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91108 (or 91094 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 1131022111100 its reverse (11112201311), we get a palindrome (1142134312411).

The spelling of 1131022111100 in words is "one trillion, one hundred thirty-one billion, twenty-two million, one hundred eleven thousand, one hundred".