1131221101110 has 32 divisors (see below), whose sum is σ = 2857821730560. Its totient is φ = 285782172768.

The previous prime is 1131221101063. The next prime is 1131221101147. The reversal of 1131221101110 is 111011221311.

It is a super-2 number, since 2×1131221101110² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1131221101110.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 992298642 + ... + 992299781.

It is an arithmetic number, because the mean of its divisors is an integer number (89306929080).

Almost surely, 2^{1131221101110} is an apocalyptic number.

1131221101110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1131221101110 is an abundant number, since it is smaller than the sum of its proper divisors (1726600629450).

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

1131221101110 is a wasteful number, since it uses less digits than its factorization.

1131221101110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1984598452.

The product of its (nonzero) digits is 12, while the sum is 15.

Adding to 1131221101110 its reverse (111011221311), we get a palindrome (1242232322421).

The spelling of 1131221101110 in words is "one trillion, one hundred thirty-one billion, two hundred twenty-one million, one hundred one thousand, one hundred ten".