1121121111000 has 128 divisors (see below), whose sum is σ = 3815888693760. Its totient is φ = 271786928000.

The previous prime is 1121121110987. The next prime is 1121121111017. The reversal of 1121121111000 is 1111211211.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16953684 + ... + 17019683.

It is an arithmetic number, because the mean of its divisors is an integer number (29811630420).

Almost surely, 2^{1121121111000} is an apocalyptic number.

1121121111000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121121111000 is an abundant number, since it is smaller than the sum of its proper divisors (2694767582760).

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

1121121111000 is a wasteful number, since it uses less digits than its factorization.

1121121111000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33973402 (or 33973388 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 1121121111000 its reverse (1111211211), we get a palindrome (1122232322211).

It can be divided in two parts, 11211211 and 11000, that added together give a palindrome (11222211).

The spelling of 1121121111000 in words is "one trillion, one hundred twenty-one billion, one hundred twenty-one million, one hundred eleven thousand".