1101111230142 has 144 divisors (see below), whose sum is σ = 3028259520000. Its totient is φ = 285935438880.

The previous prime is 1101111230099. The next prime is 1101111230203. The reversal of 1101111230142 is 2410321111011.

It is a super-2 number, since 2×1101111230142² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 51206109 + ... + 51227607.

It is an arithmetic number, because the mean of its divisors is an integer number (21029580000).

Almost surely, 2^{1101111230142} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1101111230142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1514129760000).

1101111230142 is an abundant number, since it is smaller than the sum of its proper divisors (1927148289858).

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

1101111230142 is a wasteful number, since it uses less digits than its factorization.

1101111230142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26811 (or 26801 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 1101111230142 its reverse (2410321111011), we get a palindrome (3511432341153).

The spelling of 1101111230142 in words is "one trillion, one hundred one billion, one hundred eleven million, two hundred thirty thousand, one hundred forty-two".