1131020111130 has 256 divisors, whose sum is σ = 3518345134080. Its totient is φ = 225967076352.

The previous prime is 1131020111099. The next prime is 1131020111159. The reversal of 1131020111130 is 311110201311.

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

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 156799404 + ... + 156806616.

It is an arithmetic number, because the mean of its divisors is an integer number (13743535680).

Almost surely, 2^{1131020111130} is an apocalyptic number.

1131020111130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1131020111130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1759172567040).

1131020111130 is an abundant number, since it is smaller than the sum of its proper divisors (2387325022950).

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

1131020111130 is a wasteful number, since it uses less digits than its factorization.

1131020111130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10285.

The product of its (nonzero) digits is 18, while the sum is 15.

Adding to 1131020111130 its reverse (311110201311), we get a palindrome (1442130312441).

The spelling of 1131020111130 in words is "one trillion, one hundred thirty-one billion, twenty million, one hundred eleven thousand, one hundred thirty".